1238 lines
39 KiB
C++
1238 lines
39 KiB
C++
#include "profiles.hh"
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#include "names.hh"
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#include "globals.hh"
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#include "misc.hh"
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#include "shared.hh"
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#include "parser.hh"
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#include "eval.hh"
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#include "help.txt.hh"
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#include "nixexpr-ast.hh"
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#include "get-drvs.hh"
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#include "attr-path.hh"
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#include "pathlocks.hh"
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#include "xml-writer.hh"
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#include "store-api.hh"
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#include "db.hh"
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#include "util.hh"
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#include <cerrno>
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#include <ctime>
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#include <algorithm>
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#include <iostream>
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#include <sstream>
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#include <unistd.h>
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using namespace nix;
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using std::cout;
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typedef enum {
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srcNixExprDrvs,
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srcNixExprs,
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srcStorePaths,
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srcProfile,
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srcAttrPath,
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srcUnknown
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} InstallSourceType;
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struct InstallSourceInfo
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{
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InstallSourceType type;
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Path nixExprPath; /* for srcNixExprDrvs, srcNixExprs */
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Path profile; /* for srcProfile */
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string systemFilter; /* for srcNixExprDrvs */
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ATermMap autoArgs;
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InstallSourceInfo() : autoArgs(128) { };
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};
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struct Globals
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{
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InstallSourceInfo instSource;
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Path profile;
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EvalState state;
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bool dryRun;
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bool preserveInstalled;
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bool keepDerivations;
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string forceName;
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};
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typedef void (* Operation) (Globals & globals,
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Strings opFlags, Strings opArgs);
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void printHelp()
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{
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cout << string((char *) helpText, sizeof helpText);
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}
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static void loadDerivations(EvalState & state, Path nixExprPath,
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string systemFilter, const ATermMap & autoArgs, DrvInfos & elems)
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{
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getDerivations(state,
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parseExprFromFile(state, absPath(nixExprPath)), "", autoArgs, elems);
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/* Filter out all derivations not applicable to the current
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system. */
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for (DrvInfos::iterator i = elems.begin(), j; i != elems.end(); i = j) {
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j = i; j++;
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if (systemFilter != "*" && i->system != systemFilter)
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elems.erase(i);
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}
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}
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static Path getHomeDir()
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{
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Path homeDir(getEnv("HOME", ""));
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if (homeDir == "") throw Error("HOME environment variable not set");
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return homeDir;
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}
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static Path getDefNixExprPath()
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{
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return getHomeDir() + "/.nix-defexpr";
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}
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struct AddPos : TermFun
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{
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ATerm operator () (ATerm e)
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{
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ATerm x, y;
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if (matchObsoleteBind(e, x, y))
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return makeBind(x, y, makeNoPos());
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if (matchObsoleteStr(e, x))
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return makeStr(x, ATempty);
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return e;
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}
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};
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static DrvInfos queryInstalled(EvalState & state, const Path & userEnv)
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{
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Path path = userEnv + "/manifest";
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if (!pathExists(path))
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return DrvInfos(); /* not an error, assume nothing installed */
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Expr e = ATreadFromNamedFile(path.c_str());
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if (!e) throw Error(format("cannot read Nix expression from `%1%'") % path);
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/* Compatibility: Bind(x, y) -> Bind(x, y, NoPos). */
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AddPos addPos;
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e = bottomupRewrite(addPos, e);
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DrvInfos elems;
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getDerivations(state, e, "", ATermMap(1), elems);
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return elems;
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}
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static void createUserEnv(EvalState & state, const DrvInfos & elems,
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const Path & profile, bool keepDerivations)
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{
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/* Build the components in the user environment, if they don't
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exist already. */
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PathSet drvsToBuild;
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for (DrvInfos::const_iterator i = elems.begin();
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i != elems.end(); ++i)
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/* Call to `isDerivation' is for compatibility with Nix <= 0.7
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user environments. */
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if (i->queryDrvPath(state) != "" &&
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isDerivation(i->queryDrvPath(state)))
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drvsToBuild.insert(i->queryDrvPath(state));
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debug(format("building user environment dependencies"));
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store->buildDerivations(drvsToBuild);
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/* Get the environment builder expression. */
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Expr envBuilder = parseExprFromFile(state,
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nixDataDir + "/nix/corepkgs/buildenv"); /* !!! */
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/* Construct the whole top level derivation. */
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PathSet references;
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ATermList manifest = ATempty;
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ATermList inputs = ATempty;
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for (DrvInfos::const_iterator i = elems.begin();
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i != elems.end(); ++i)
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{
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Path drvPath = keepDerivations ? i->queryDrvPath(state) : "";
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ATermList as = ATmakeList4(
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makeBind(toATerm("type"),
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makeStr("derivation"), makeNoPos()),
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makeBind(toATerm("name"),
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makeStr(i->name), makeNoPos()),
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makeBind(toATerm("system"),
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makeStr(i->system), makeNoPos()),
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makeBind(toATerm("outPath"),
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makeStr(i->queryOutPath(state)), makeNoPos()));
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if (drvPath != "") as = ATinsert(as,
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makeBind(toATerm("drvPath"),
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makeStr(drvPath), makeNoPos()));
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manifest = ATinsert(manifest, makeAttrs(as));
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inputs = ATinsert(inputs, makeStr(i->queryOutPath(state)));
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/* This is only necessary when installing store paths, e.g.,
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`nix-env -i /nix/store/abcd...-foo'. */
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store->addTempRoot(i->queryOutPath(state));
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store->ensurePath(i->queryOutPath(state));
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references.insert(i->queryOutPath(state));
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if (drvPath != "") references.insert(drvPath);
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}
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/* Also write a copy of the list of inputs to the store; we need
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it for future modifications of the environment. */
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Path manifestFile = store->addTextToStore("env-manifest",
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atPrint(makeList(ATreverse(manifest))), references);
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Expr topLevel = makeCall(envBuilder, makeAttrs(ATmakeList3(
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makeBind(toATerm("system"),
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makeStr(thisSystem), makeNoPos()),
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makeBind(toATerm("derivations"),
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makeList(ATreverse(inputs)), makeNoPos()),
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makeBind(toATerm("manifest"),
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makeStr(manifestFile, singleton<PathSet>(manifestFile)), makeNoPos())
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)));
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/* Instantiate it. */
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debug(format("evaluating builder expression `%1%'") % topLevel);
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DrvInfo topLevelDrv;
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if (!getDerivation(state, topLevel, topLevelDrv))
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abort();
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/* Realise the resulting store expression. */
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debug(format("building user environment"));
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store->buildDerivations(singleton<PathSet>(topLevelDrv.queryDrvPath(state)));
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/* Switch the current user environment to the output path. */
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debug(format("switching to new user environment"));
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Path generation = createGeneration(profile, topLevelDrv.queryOutPath(state));
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switchLink(profile, generation);
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}
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static DrvInfos filterBySelector(EvalState & state,
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const DrvInfos & allElems,
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const Strings & args, bool newestOnly)
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{
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DrvNames selectors = drvNamesFromArgs(args);
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DrvInfos elems;
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set<unsigned int> done;
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for (DrvNames::iterator i = selectors.begin();
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i != selectors.end(); ++i)
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{
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typedef list<std::pair<DrvInfo, unsigned int> > Matches;
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Matches matches;
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unsigned int n = 0;
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for (DrvInfos::const_iterator j = allElems.begin();
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j != allElems.end(); ++j, ++n)
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{
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DrvName drvName(j->name);
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if (i->matches(drvName)) {
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i->hits++;
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matches.push_back(std::pair<DrvInfo, unsigned int>(*j, n));
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}
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}
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/* If `newestOnly', if a selector matches multiple derivations
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with the same name, pick the one with the highest version.
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If there are multiple derivations with the same name *and*
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version, then pick the first one. */
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if (newestOnly) {
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/* Map from package names to derivations. */
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typedef map<string, std::pair<DrvInfo, unsigned int> > Newest;
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Newest newest;
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StringSet multiple;
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for (Matches::iterator j = matches.begin(); j != matches.end(); ++j) {
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DrvName drvName(j->first.name);
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Newest::iterator k = newest.find(drvName.name);
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if (k != newest.end()) {
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int d = compareVersions(drvName.version, DrvName(k->second.first.name).version);
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if (d > 0) newest[drvName.name] = *j;
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else if (d == 0) multiple.insert(j->first.name);
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} else
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newest[drvName.name] = *j;
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}
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matches.clear();
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for (Newest::iterator j = newest.begin(); j != newest.end(); ++j) {
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if (multiple.find(j->second.first.name) != multiple.end())
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printMsg(lvlInfo,
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format("warning: there are multiple derivations named `%1%'; using the first one")
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% j->second.first.name);
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matches.push_back(j->second);
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}
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}
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/* Insert only those elements in the final list that we
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haven't inserted before. */
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for (Matches::iterator j = matches.begin(); j != matches.end(); ++j)
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if (done.find(j->second) == done.end()) {
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done.insert(j->second);
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elems.push_back(j->first);
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}
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}
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/* Check that all selectors have been used. */
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for (DrvNames::iterator i = selectors.begin();
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i != selectors.end(); ++i)
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if (i->hits == 0)
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throw Error(format("selector `%1%' matches no derivations")
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% i->fullName);
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return elems;
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}
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static void queryInstSources(EvalState & state,
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const InstallSourceInfo & instSource, const Strings & args,
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DrvInfos & elems, bool newestOnly)
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{
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InstallSourceType type = instSource.type;
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if (type == srcUnknown && args.size() > 0 && args.front()[0] == '/')
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type = srcStorePaths;
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switch (type) {
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/* Get the available user environment elements from the
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derivations specified in a Nix expression, including only
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those with names matching any of the names in `args'. */
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case srcUnknown:
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case srcNixExprDrvs: {
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/* Load the derivations from the (default or specified)
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Nix expression. */
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DrvInfos allElems;
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loadDerivations(state, instSource.nixExprPath,
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instSource.systemFilter, instSource.autoArgs, allElems);
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elems = filterBySelector(state, allElems, args, newestOnly);
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break;
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}
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/* Get the available user environment elements from the Nix
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expressions specified on the command line; these should be
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functions that take the default Nix expression file as
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argument, e.g., if the file is `./foo.nix', then the
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argument `x: x.bar' is equivalent to `(x: x.bar)
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(import ./foo.nix)' = `(import ./foo.nix).bar'. */
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case srcNixExprs: {
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Expr e1 = parseExprFromFile(state,
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absPath(instSource.nixExprPath));
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for (Strings::const_iterator i = args.begin();
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i != args.end(); ++i)
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{
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Expr e2 = parseExprFromString(state, *i, absPath("."));
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Expr call = makeCall(e2, e1);
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getDerivations(state, call, "", instSource.autoArgs, elems);
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}
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break;
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}
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/* The available user environment elements are specified as a
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list of store paths (which may or may not be
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derivations). */
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case srcStorePaths: {
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for (Strings::const_iterator i = args.begin();
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i != args.end(); ++i)
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{
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assertStorePath(*i);
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DrvInfo elem;
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elem.attrs = boost::shared_ptr<ATermMap>(new ATermMap(0)); /* ugh... */
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string name = baseNameOf(*i);
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string::size_type dash = name.find('-');
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if (dash != string::npos)
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name = string(name, dash + 1);
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if (isDerivation(*i)) {
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elem.setDrvPath(*i);
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elem.setOutPath(findOutput(derivationFromPath(*i), "out"));
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if (name.size() >= drvExtension.size() &&
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string(name, name.size() - drvExtension.size()) == drvExtension)
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name = string(name, 0, name.size() - drvExtension.size());
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}
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else elem.setOutPath(*i);
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elem.name = name;
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elems.push_back(elem);
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}
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break;
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}
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/* Get the available user environment elements from another
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user environment. These are then filtered as in the
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`srcNixExprDrvs' case. */
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case srcProfile: {
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elems = filterBySelector(state,
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queryInstalled(state, instSource.profile),
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args, newestOnly);
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break;
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}
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case srcAttrPath: {
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for (Strings::const_iterator i = args.begin();
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i != args.end(); ++i)
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getDerivations(state,
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findAlongAttrPath(state, *i, instSource.autoArgs,
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parseExprFromFile(state, instSource.nixExprPath)),
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"", instSource.autoArgs, elems);
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break;
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}
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}
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}
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static void printMissing(EvalState & state, const DrvInfos & elems)
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{
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PathSet targets, willBuild, willSubstitute;
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for (DrvInfos::const_iterator i = elems.begin(); i != elems.end(); ++i) {
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Path drvPath = i->queryDrvPath(state);
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if (drvPath != "")
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targets.insert(drvPath);
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else
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targets.insert(i->queryOutPath(state));
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}
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queryMissing(targets, willBuild, willSubstitute);
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if (!willBuild.empty()) {
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printMsg(lvlInfo, format("the following derivations will be built:"));
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for (PathSet::iterator i = willBuild.begin(); i != willBuild.end(); ++i)
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printMsg(lvlInfo, format(" %1%") % *i);
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}
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if (!willSubstitute.empty()) {
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printMsg(lvlInfo, format("the following paths will be substituted:"));
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for (PathSet::iterator i = willSubstitute.begin(); i != willSubstitute.end(); ++i)
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printMsg(lvlInfo, format(" %1%") % *i);
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}
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}
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static void lockProfile(PathLocks & lock, const Path & profile)
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{
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lock.lockPaths(singleton<PathSet>(profile),
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(format("waiting for lock on profile `%1%'") % profile).str());
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lock.setDeletion(true);
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}
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static void installDerivations(Globals & globals,
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const Strings & args, const Path & profile)
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{
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debug(format("installing derivations"));
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/* Get the set of user environment elements to be installed. */
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DrvInfos newElems;
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queryInstSources(globals.state, globals.instSource, args, newElems, true);
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StringSet newNames;
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for (DrvInfos::iterator i = newElems.begin(); i != newElems.end(); ++i) {
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/* `forceName' is a hack to get package names right in some
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one-click installs, namely those where the name used in the
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path is not the one we want (e.g., `java-front' versus
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`java-front-0.9pre15899'). */
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if (globals.forceName != "")
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i->name = globals.forceName;
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newNames.insert(DrvName(i->name).name);
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}
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/* Add in the already installed derivations, unless they have the
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same name as a to-be-installed element. */
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PathLocks lock;
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lockProfile(lock, profile);
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DrvInfos installedElems = queryInstalled(globals.state, profile);
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DrvInfos allElems(newElems);
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for (DrvInfos::iterator i = installedElems.begin();
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i != installedElems.end(); ++i)
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{
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DrvName drvName(i->name);
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if (!globals.preserveInstalled &&
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newNames.find(drvName.name) != newNames.end())
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printMsg(lvlInfo,
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format("replacing old `%1%'") % i->name);
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else
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allElems.push_back(*i);
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}
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for (DrvInfos::iterator i = newElems.begin(); i != newElems.end(); ++i)
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printMsg(lvlInfo,
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format("installing `%1%'") % i->name);
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if (globals.dryRun) {
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printMissing(globals.state, newElems);
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return;
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}
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createUserEnv(globals.state, allElems,
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profile, globals.keepDerivations);
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}
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static void opInstall(Globals & globals,
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Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flag `%1%'") % opFlags.front());
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installDerivations(globals, opArgs, globals.profile);
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}
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typedef enum { utLt, utLeq, utEq, utAlways } UpgradeType;
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|
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static void upgradeDerivations(Globals & globals,
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const Strings & args, const Path & profile,
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UpgradeType upgradeType)
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{
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debug(format("upgrading derivations"));
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/* Upgrade works as follows: we take all currently installed
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derivations, and for any derivation matching any selector, look
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for a derivation in the input Nix expression that has the same
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name and a higher version number. */
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/* Load the currently installed derivations. */
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PathLocks lock;
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lockProfile(lock, profile);
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DrvInfos installedElems = queryInstalled(globals.state, profile);
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/* Fetch all derivations from the input file. */
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DrvInfos availElems;
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queryInstSources(globals.state, globals.instSource, args, availElems, false);
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/* Go through all installed derivations. */
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DrvInfos newElems;
|
|
for (DrvInfos::iterator i = installedElems.begin();
|
|
i != installedElems.end(); ++i)
|
|
{
|
|
DrvName drvName(i->name);
|
|
|
|
/* Find the derivation in the input Nix expression with the
|
|
same name and satisfying the version constraints specified
|
|
by upgradeType. If there are multiple matches, take the
|
|
one with highest version. */
|
|
DrvInfos::iterator bestElem = availElems.end();
|
|
DrvName bestName;
|
|
for (DrvInfos::iterator j = availElems.begin();
|
|
j != availElems.end(); ++j)
|
|
{
|
|
DrvName newName(j->name);
|
|
if (newName.name == drvName.name) {
|
|
int d = compareVersions(drvName.version, newName.version);
|
|
if (upgradeType == utLt && d < 0 ||
|
|
upgradeType == utLeq && d <= 0 ||
|
|
upgradeType == utEq && d == 0 ||
|
|
upgradeType == utAlways)
|
|
{
|
|
if ((bestElem == availElems.end() ||
|
|
compareVersions(
|
|
bestName.version, newName.version) < 0))
|
|
{
|
|
bestElem = j;
|
|
bestName = newName;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bestElem != availElems.end() &&
|
|
i->queryOutPath(globals.state) !=
|
|
bestElem->queryOutPath(globals.state))
|
|
{
|
|
printMsg(lvlInfo,
|
|
format("upgrading `%1%' to `%2%'")
|
|
% i->name % bestElem->name);
|
|
newElems.push_back(*bestElem);
|
|
} else newElems.push_back(*i);
|
|
}
|
|
|
|
if (globals.dryRun) {
|
|
printMissing(globals.state, newElems);
|
|
return;
|
|
}
|
|
|
|
createUserEnv(globals.state, newElems,
|
|
profile, globals.keepDerivations);
|
|
}
|
|
|
|
|
|
static void opUpgrade(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
UpgradeType upgradeType = utLt;
|
|
for (Strings::iterator i = opFlags.begin();
|
|
i != opFlags.end(); ++i)
|
|
if (*i == "--lt") upgradeType = utLt;
|
|
else if (*i == "--leq") upgradeType = utLeq;
|
|
else if (*i == "--eq") upgradeType = utEq;
|
|
else if (*i == "--always") upgradeType = utAlways;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
upgradeDerivations(globals, opArgs, globals.profile, upgradeType);
|
|
}
|
|
|
|
|
|
static void opSet(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
|
|
|
|
DrvInfos elems;
|
|
queryInstSources(globals.state, globals.instSource, opArgs, elems, true);
|
|
|
|
if (elems.size() != 1)
|
|
throw Error("--set requires exactly one derivation");
|
|
|
|
DrvInfo & drv(elems.front());
|
|
|
|
if (drv.queryDrvPath(globals.state) != "")
|
|
store->buildDerivations(singleton<PathSet>(drv.queryDrvPath(globals.state)));
|
|
else
|
|
store->ensurePath(drv.queryOutPath(globals.state));
|
|
|
|
debug(format("switching to new user environment"));
|
|
Path generation = createGeneration(globals.profile, drv.queryOutPath(globals.state));
|
|
switchLink(globals.profile, generation);
|
|
}
|
|
|
|
|
|
static void uninstallDerivations(Globals & globals, DrvNames & selectors,
|
|
Path & profile)
|
|
{
|
|
PathLocks lock;
|
|
lockProfile(lock, profile);
|
|
DrvInfos installedElems = queryInstalled(globals.state, profile);
|
|
DrvInfos newElems;
|
|
|
|
for (DrvInfos::iterator i = installedElems.begin();
|
|
i != installedElems.end(); ++i)
|
|
{
|
|
DrvName drvName(i->name);
|
|
bool found = false;
|
|
for (DrvNames::iterator j = selectors.begin();
|
|
j != selectors.end(); ++j)
|
|
if (j->matches(drvName)) {
|
|
printMsg(lvlInfo,
|
|
format("uninstalling `%1%'") % i->name);
|
|
found = true;
|
|
break;
|
|
}
|
|
if (!found) newElems.push_back(*i);
|
|
}
|
|
|
|
if (globals.dryRun) return;
|
|
|
|
createUserEnv(globals.state, newElems,
|
|
profile, globals.keepDerivations);
|
|
}
|
|
|
|
|
|
static void opUninstall(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
|
|
|
|
DrvNames drvNames = drvNamesFromArgs(opArgs);
|
|
|
|
uninstallDerivations(globals, drvNames,
|
|
globals.profile);
|
|
}
|
|
|
|
|
|
static bool cmpChars(char a, char b)
|
|
{
|
|
return toupper(a) < toupper(b);
|
|
}
|
|
|
|
|
|
static bool cmpElemByName(const DrvInfo & a, const DrvInfo & b)
|
|
{
|
|
return lexicographical_compare(
|
|
a.name.begin(), a.name.end(),
|
|
b.name.begin(), b.name.end(), cmpChars);
|
|
}
|
|
|
|
|
|
typedef list<Strings> Table;
|
|
|
|
|
|
void printTable(Table & table)
|
|
{
|
|
unsigned int nrColumns = table.size() > 0 ? table.front().size() : 0;
|
|
|
|
vector<unsigned int> widths;
|
|
widths.resize(nrColumns);
|
|
|
|
for (Table::iterator i = table.begin(); i != table.end(); ++i) {
|
|
assert(i->size() == nrColumns);
|
|
Strings::iterator j;
|
|
unsigned int column;
|
|
for (j = i->begin(), column = 0; j != i->end(); ++j, ++column)
|
|
if (j->size() > widths[column]) widths[column] = j->size();
|
|
}
|
|
|
|
for (Table::iterator i = table.begin(); i != table.end(); ++i) {
|
|
Strings::iterator j;
|
|
unsigned int column;
|
|
for (j = i->begin(), column = 0; j != i->end(); ++j, ++column)
|
|
{
|
|
cout << *j;
|
|
if (column < nrColumns - 1)
|
|
cout << string(widths[column] - j->size() + 2, ' ');
|
|
}
|
|
cout << std::endl;
|
|
}
|
|
}
|
|
|
|
|
|
/* This function compares the version of a element against the
|
|
versions in the given set of elements. `cvLess' means that only
|
|
lower versions are in the set, `cvEqual' means that at most an
|
|
equal version is in the set, and `cvGreater' means that there is at
|
|
least one element with a higher version in the set. `cvUnavail'
|
|
means that there are no elements with the same name in the set. */
|
|
|
|
typedef enum { cvLess, cvEqual, cvGreater, cvUnavail } VersionDiff;
|
|
|
|
static VersionDiff compareVersionAgainstSet(
|
|
const DrvInfo & elem, const DrvInfos & elems, string & version)
|
|
{
|
|
DrvName name(elem.name);
|
|
|
|
VersionDiff diff = cvUnavail;
|
|
version = "?";
|
|
|
|
for (DrvInfos::const_iterator i = elems.begin(); i != elems.end(); ++i) {
|
|
DrvName name2(i->name);
|
|
if (name.name == name2.name) {
|
|
int d = compareVersions(name.version, name2.version);
|
|
if (d < 0) {
|
|
diff = cvGreater;
|
|
version = name2.version;
|
|
}
|
|
else if (diff != cvGreater && d == 0) {
|
|
diff = cvEqual;
|
|
version = name2.version;
|
|
}
|
|
else if (diff != cvGreater && diff != cvEqual && d > 0) {
|
|
diff = cvLess;
|
|
if (version == "" || compareVersions(version, name2.version) < 0)
|
|
version = name2.version;
|
|
}
|
|
}
|
|
}
|
|
|
|
return diff;
|
|
}
|
|
|
|
|
|
static string colorString(const string & s)
|
|
{
|
|
if (!isatty(STDOUT_FILENO)) return s;
|
|
return "\e[1;31m" + s + "\e[0m";
|
|
}
|
|
|
|
|
|
static void opQuery(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
typedef vector< map<string, string> > ResultSet;
|
|
|
|
bool printStatus = false;
|
|
bool printName = true;
|
|
bool printAttrPath = false;
|
|
bool printSystem = false;
|
|
bool printDrvPath = false;
|
|
bool printOutPath = false;
|
|
bool printDescription = false;
|
|
bool compareVersions = false;
|
|
bool xmlOutput = false;
|
|
|
|
enum { sInstalled, sAvailable } source = sInstalled;
|
|
|
|
readOnlyMode = true; /* makes evaluation a bit faster */
|
|
|
|
for (Strings::iterator i = opFlags.begin();
|
|
i != opFlags.end(); ++i)
|
|
if (*i == "--status" || *i == "-s") printStatus = true;
|
|
else if (*i == "--no-name") printName = false;
|
|
else if (*i == "--system") printSystem = true;
|
|
else if (*i == "--description") printDescription = true;
|
|
else if (*i == "--compare-versions" || *i == "-c") compareVersions = true;
|
|
else if (*i == "--drv-path") printDrvPath = true;
|
|
else if (*i == "--out-path") printOutPath = true;
|
|
else if (*i == "--installed") source = sInstalled;
|
|
else if (*i == "--available" || *i == "-a") source = sAvailable;
|
|
else if (*i == "--xml") xmlOutput = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
if (globals.instSource.type == srcAttrPath) printAttrPath = true; /* hack */
|
|
|
|
if (opArgs.size() == 0) {
|
|
printMsg(lvlInfo, "warning: you probably meant to specify the argument '*' to show all packages");
|
|
}
|
|
|
|
|
|
/* Obtain derivation information from the specified source. */
|
|
DrvInfos availElems, installedElems;
|
|
|
|
if (source == sInstalled || compareVersions || printStatus) {
|
|
installedElems = queryInstalled(globals.state, globals.profile);
|
|
}
|
|
|
|
if (source == sAvailable || compareVersions) {
|
|
loadDerivations(globals.state, globals.instSource.nixExprPath,
|
|
globals.instSource.systemFilter, globals.instSource.autoArgs,
|
|
availElems);
|
|
}
|
|
|
|
DrvInfos elems = filterBySelector(globals.state,
|
|
source == sInstalled ? installedElems : availElems,
|
|
opArgs, false);
|
|
|
|
DrvInfos & otherElems(source == sInstalled ? availElems : installedElems);
|
|
|
|
|
|
/* Sort them by name. */
|
|
/* !!! */
|
|
vector<DrvInfo> elems2;
|
|
for (DrvInfos::iterator i = elems.begin(); i != elems.end(); ++i)
|
|
elems2.push_back(*i);
|
|
sort(elems2.begin(), elems2.end(), cmpElemByName);
|
|
|
|
|
|
/* We only need to know the installed paths when we are querying
|
|
the status of the derivation. */
|
|
PathSet installed; /* installed paths */
|
|
|
|
if (printStatus) {
|
|
for (DrvInfos::iterator i = installedElems.begin();
|
|
i != installedElems.end(); ++i)
|
|
installed.insert(i->queryOutPath(globals.state));
|
|
}
|
|
|
|
|
|
/* Print the desired columns, or XML output. */
|
|
Table table;
|
|
std::ostringstream dummy;
|
|
XMLWriter xml(true, *(xmlOutput ? &cout : &dummy));
|
|
XMLOpenElement xmlRoot(xml, "items");
|
|
|
|
for (vector<DrvInfo>::iterator i = elems2.begin();
|
|
i != elems2.end(); ++i)
|
|
{
|
|
try {
|
|
|
|
/* For table output. */
|
|
Strings columns;
|
|
|
|
/* For XML output. */
|
|
XMLAttrs attrs;
|
|
|
|
if (printStatus) {
|
|
bool hasSubs = store->hasSubstitutes(i->queryOutPath(globals.state));
|
|
bool isInstalled = installed.find(i->queryOutPath(globals.state)) != installed.end();
|
|
bool isValid = store->isValidPath(i->queryOutPath(globals.state));
|
|
if (xmlOutput) {
|
|
attrs["installed"] = isInstalled ? "1" : "0";
|
|
attrs["valid"] = isValid ? "1" : "0";
|
|
attrs["substitutable"] = hasSubs ? "1" : "0";
|
|
} else
|
|
columns.push_back(
|
|
(string) (isInstalled ? "I" : "-")
|
|
+ (isValid ? "P" : "-")
|
|
+ (hasSubs ? "S" : "-"));
|
|
}
|
|
|
|
if (xmlOutput)
|
|
attrs["attrPath"] = i->attrPath;
|
|
else if (printAttrPath)
|
|
columns.push_back(i->attrPath);
|
|
|
|
if (xmlOutput)
|
|
attrs["name"] = i->name;
|
|
else if (printName)
|
|
columns.push_back(i->name);
|
|
|
|
if (compareVersions) {
|
|
/* Compare this element against the versions of the
|
|
same named packages in either the set of available
|
|
elements, or the set of installed elements. !!!
|
|
This is O(N * M), should be O(N * lg M). */
|
|
string version;
|
|
VersionDiff diff = compareVersionAgainstSet(*i, otherElems, version);
|
|
|
|
char ch;
|
|
switch (diff) {
|
|
case cvLess: ch = '>'; break;
|
|
case cvEqual: ch = '='; break;
|
|
case cvGreater: ch = '<'; break;
|
|
case cvUnavail: ch = '-'; break;
|
|
default: abort();
|
|
}
|
|
|
|
if (xmlOutput) {
|
|
if (diff != cvUnavail) {
|
|
attrs["versionDiff"] = ch;
|
|
attrs["maxComparedVersion"] = version;
|
|
}
|
|
} else {
|
|
string column = (string) "" + ch + " " + version;
|
|
if (diff == cvGreater) column = colorString(column);
|
|
columns.push_back(column);
|
|
}
|
|
}
|
|
|
|
if (xmlOutput) {
|
|
if (i->system != "") attrs["system"] = i->system;
|
|
}
|
|
else if (printSystem)
|
|
columns.push_back(i->system);
|
|
|
|
if (printDrvPath) {
|
|
string drvPath = i->queryDrvPath(globals.state);
|
|
if (xmlOutput) {
|
|
if (drvPath != "") attrs["drvPath"] = drvPath;
|
|
} else
|
|
columns.push_back(drvPath == "" ? "-" : drvPath);
|
|
}
|
|
|
|
if (printOutPath) {
|
|
string outPath = i->queryOutPath(globals.state);
|
|
if (xmlOutput) {
|
|
if (outPath != "") attrs["outPath"] = outPath;
|
|
} else
|
|
columns.push_back(outPath);
|
|
}
|
|
|
|
if (printDescription) {
|
|
MetaInfo meta = i->queryMetaInfo(globals.state);
|
|
string descr = meta["description"];
|
|
if (xmlOutput) {
|
|
if (descr != "") attrs["description"] = descr;
|
|
} else
|
|
columns.push_back(descr);
|
|
}
|
|
|
|
if (xmlOutput)
|
|
xml.writeEmptyElement("item", attrs);
|
|
else
|
|
table.push_back(columns);
|
|
|
|
cout.flush();
|
|
|
|
} catch (AssertionError & e) {
|
|
/* !!! hm, maybe we should give some sort of warning here? */
|
|
}
|
|
}
|
|
|
|
if (!xmlOutput) printTable(table);
|
|
}
|
|
|
|
|
|
static void opSwitchProfile(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
|
|
if (opArgs.size() != 1)
|
|
throw UsageError(format("exactly one argument expected"));
|
|
|
|
Path profile = absPath(opArgs.front());
|
|
Path profileLink = getHomeDir() + "/.nix-profile";
|
|
|
|
switchLink(profileLink, profile);
|
|
}
|
|
|
|
|
|
static const int prevGen = -2;
|
|
|
|
|
|
static void switchGeneration(Globals & globals, int dstGen)
|
|
{
|
|
PathLocks lock;
|
|
lockProfile(lock, globals.profile);
|
|
|
|
int curGen;
|
|
Generations gens = findGenerations(globals.profile, curGen);
|
|
|
|
Generation dst;
|
|
for (Generations::iterator i = gens.begin(); i != gens.end(); ++i)
|
|
if ((dstGen == prevGen && i->number < curGen) ||
|
|
(dstGen >= 0 && i->number == dstGen))
|
|
dst = *i;
|
|
|
|
if (!dst)
|
|
if (dstGen == prevGen)
|
|
throw Error(format("no generation older than the current (%1%) exists")
|
|
% curGen);
|
|
else
|
|
throw Error(format("generation %1% does not exist") % dstGen);
|
|
|
|
printMsg(lvlInfo, format("switching from generation %1% to %2%")
|
|
% curGen % dst.number);
|
|
|
|
if (globals.dryRun) return;
|
|
|
|
switchLink(globals.profile, dst.path);
|
|
}
|
|
|
|
|
|
static void opSwitchGeneration(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
|
|
if (opArgs.size() != 1)
|
|
throw UsageError(format("exactly one argument expected"));
|
|
|
|
int dstGen;
|
|
if (!string2Int(opArgs.front(), dstGen))
|
|
throw UsageError(format("expected a generation number"));
|
|
|
|
switchGeneration(globals, dstGen);
|
|
}
|
|
|
|
|
|
static void opRollback(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
|
|
if (opArgs.size() != 0)
|
|
throw UsageError(format("no arguments expected"));
|
|
|
|
switchGeneration(globals, prevGen);
|
|
}
|
|
|
|
|
|
static void opListGenerations(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
|
|
if (opArgs.size() != 0)
|
|
throw UsageError(format("no arguments expected"));
|
|
|
|
PathLocks lock;
|
|
lockProfile(lock, globals.profile);
|
|
|
|
int curGen;
|
|
Generations gens = findGenerations(globals.profile, curGen);
|
|
|
|
for (Generations::iterator i = gens.begin(); i != gens.end(); ++i) {
|
|
tm t;
|
|
if (!localtime_r(&i->creationTime, &t)) throw Error("cannot convert time");
|
|
cout << format("%|4| %|4|-%|02|-%|02| %|02|:%|02|:%|02| %||\n")
|
|
% i->number
|
|
% (t.tm_year + 1900) % (t.tm_mon + 1) % t.tm_mday
|
|
% t.tm_hour % t.tm_min % t.tm_sec
|
|
% (i->number == curGen ? "(current)" : "");
|
|
}
|
|
}
|
|
|
|
|
|
static void deleteGeneration2(const Path & profile, unsigned int gen)
|
|
{
|
|
printMsg(lvlInfo, format("removing generation %1%") % gen);
|
|
deleteGeneration(profile, gen);
|
|
}
|
|
|
|
|
|
static void opDeleteGenerations(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
|
|
|
|
PathLocks lock;
|
|
lockProfile(lock, globals.profile);
|
|
|
|
int curGen;
|
|
Generations gens = findGenerations(globals.profile, curGen);
|
|
|
|
for (Strings::iterator i = opArgs.begin(); i != opArgs.end(); ++i) {
|
|
|
|
if (*i == "old") {
|
|
for (Generations::iterator j = gens.begin(); j != gens.end(); ++j)
|
|
if (j->number != curGen)
|
|
deleteGeneration2(globals.profile, j->number);
|
|
}
|
|
|
|
else {
|
|
int n;
|
|
if (!string2Int(*i, n) || n < 0)
|
|
throw UsageError(format("invalid generation specifier `%1%'") % *i);
|
|
bool found = false;
|
|
for (Generations::iterator j = gens.begin(); j != gens.end(); ++j) {
|
|
if (j->number == n) {
|
|
deleteGeneration2(globals.profile, j->number);
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!found)
|
|
printMsg(lvlError, format("generation %1% does not exist") % n);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void opDefaultExpr(Globals & globals,
|
|
Strings opFlags, Strings opArgs)
|
|
{
|
|
if (opFlags.size() > 0)
|
|
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
|
|
if (opArgs.size() != 1)
|
|
throw UsageError(format("exactly one argument expected"));
|
|
|
|
Path defNixExpr = absPath(opArgs.front());
|
|
Path defNixExprLink = getDefNixExprPath();
|
|
|
|
switchLink(defNixExprLink, defNixExpr);
|
|
}
|
|
|
|
|
|
static string needArg(Strings::iterator & i,
|
|
Strings & args, const string & arg)
|
|
{
|
|
++i;
|
|
if (i == args.end()) throw UsageError(
|
|
format("`%1%' requires an argument") % arg);
|
|
return *i;
|
|
}
|
|
|
|
|
|
void run(Strings args)
|
|
{
|
|
Strings opFlags, opArgs;
|
|
Operation op = 0;
|
|
|
|
Globals globals;
|
|
|
|
globals.instSource.type = srcUnknown;
|
|
globals.instSource.nixExprPath = getDefNixExprPath();
|
|
globals.instSource.systemFilter = thisSystem;
|
|
|
|
globals.dryRun = false;
|
|
globals.preserveInstalled = false;
|
|
|
|
globals.keepDerivations =
|
|
queryBoolSetting("env-keep-derivations", false);
|
|
|
|
for (Strings::iterator i = args.begin(); i != args.end(); ++i) {
|
|
string arg = *i;
|
|
|
|
Operation oldOp = op;
|
|
|
|
if (arg == "--install" || arg == "-i")
|
|
op = opInstall;
|
|
else if (arg == "--from-expression" || arg == "-E")
|
|
globals.instSource.type = srcNixExprs;
|
|
else if (arg == "--from-profile") {
|
|
globals.instSource.type = srcProfile;
|
|
globals.instSource.profile = needArg(i, args, arg);
|
|
}
|
|
else if (arg == "--attr" || arg == "-A")
|
|
globals.instSource.type = srcAttrPath;
|
|
else if (arg == "--arg") { /* !!! code duplication from nix-instantiate */
|
|
i++;
|
|
if (i == args.end())
|
|
throw UsageError("`--arg' requires two arguments");
|
|
string name = *i++;
|
|
if (i == args.end())
|
|
throw UsageError("`--arg' requires two arguments");
|
|
Expr value = parseExprFromString(globals.state, *i, absPath("."));
|
|
globals.instSource.autoArgs.set(toATerm(name), value);
|
|
}
|
|
else if (arg == "--force-name") // undocumented flag for nix-install-package
|
|
globals.forceName = needArg(i, args, arg);
|
|
else if (arg == "--uninstall" || arg == "-e")
|
|
op = opUninstall;
|
|
else if (arg == "--upgrade" || arg == "-u")
|
|
op = opUpgrade;
|
|
else if (arg == "--set")
|
|
op = opSet;
|
|
else if (arg == "--query" || arg == "-q")
|
|
op = opQuery;
|
|
else if (arg == "--import" || arg == "-I") /* !!! bad name */
|
|
op = opDefaultExpr;
|
|
else if (arg == "--profile" || arg == "-p") {
|
|
globals.profile = absPath(needArg(i, args, arg));
|
|
}
|
|
else if (arg == "--file" || arg == "-f") {
|
|
globals.instSource.nixExprPath = absPath(needArg(i, args, arg));
|
|
}
|
|
else if (arg == "--switch-profile" || arg == "-S")
|
|
op = opSwitchProfile;
|
|
else if (arg == "--switch-generation" || arg == "-G")
|
|
op = opSwitchGeneration;
|
|
else if (arg == "--rollback")
|
|
op = opRollback;
|
|
else if (arg == "--list-generations")
|
|
op = opListGenerations;
|
|
else if (arg == "--delete-generations")
|
|
op = opDeleteGenerations;
|
|
else if (arg == "--dry-run") {
|
|
printMsg(lvlInfo, "(dry run; not doing anything)");
|
|
globals.dryRun = true;
|
|
}
|
|
else if (arg == "--preserve-installed" || arg == "-P")
|
|
globals.preserveInstalled = true;
|
|
else if (arg == "--system-filter") {
|
|
globals.instSource.systemFilter = needArg(i, args, arg);
|
|
}
|
|
else if (arg[0] == '-')
|
|
opFlags.push_back(arg);
|
|
else
|
|
opArgs.push_back(arg);
|
|
|
|
if (oldOp && oldOp != op)
|
|
throw UsageError("only one operation may be specified");
|
|
}
|
|
|
|
if (!op) throw UsageError("no operation specified");
|
|
|
|
if (globals.profile == "") {
|
|
Path profileLink = getHomeDir() + "/.nix-profile";
|
|
globals.profile = pathExists(profileLink)
|
|
? absPath(readLink(profileLink), dirOf(profileLink))
|
|
: canonPath(nixStateDir + "/profiles/default");
|
|
}
|
|
|
|
store = openStore();
|
|
|
|
op(globals, opFlags, opArgs);
|
|
|
|
printEvalStats(globals.state);
|
|
}
|
|
|
|
|
|
string programId = "nix-env";
|