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Updates to nix-reduce-build 

Common code in local build package sources refactored out in a function; before building the real set of derivations needed is found (slightly slower for only one build strategy, but less garbage on output and better performance for multiple build strategies).

Now you have full choice of best-effort build regardless of method (substituters or actual build), using substituters, building only fixed derivations (should get you all the downloads) and local build without even trying substituters. 

Some minor fix in the help text about behavior with no package sources.
This commit is contained in:
Michael Raskin 2008-08-06 19:43:53 +00:00
parent 72f3ea7358
commit b455c4c45c
1 changed files with 50 additions and 26 deletions
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76
scripts/nix-reduce-build.in
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@ -24,6 +24,9 @@ if test -z "$1" || test "a--help" = "a$1" ; then
echo "derivations with specified output hash (sha256, sha1 or md5)." >&2
echo " nix-daemon-substitute:// and nix-self-substitute:// try to substitute" >&2;
echo "maximum amount of paths" >&2;
echo " nix-daemon-build:// and nix-self-build:// try to build (not substitute)" >&2;
echo "maximum amount of paths" >&2;
echo " If no package sources are specified, required paths are listed." >&2;
exit;
fi;
@ -71,10 +74,37 @@ echo Prepared $(cat wanted-paths | wc -l) paths to get. >&2
cat wanted-paths | xargs nix-store --check-validity --print-invalid > needed-paths;
echo We need $(cat needed-paths | wc -l) paths. >&2
egrep '[.]drv$' derivers-closure > critical-derivers;
if test -z "$1" ; then
cat needed-paths;
fi;
refresh_critical_derivers() {
echo "Finding needed derivers..." >&2;
cat critical-derivers | while read; do
if ! (nix-store --query --outputs "$REPLY" | xargs nix-store --check-validity &> /dev/null;); then
echo "$REPLY";
fi;
done > new-critical-derivers;
mv new-critical-derivers critical-derivers;
echo The needed paths are realized by $(cat critical-derivers | wc -l) derivers. >&2
}
build_here() {
cat critical-derivers | while read; do
echo "Realising $REPLY using nix-daemon" >&2
@bindir@/nix-store -r "${REPLY}"
done;
}
try_to_substitute(){
cat needed-paths | while read ; do
echo "Building $REPLY using nix-daemon" >&2
@bindir@/nix-store -r "${NIX_STORE_DIR:-/nix/store}/${REPLY##*/}"
done;
}
for i in "$@"; do
sshHost="${i#ssh://}";
httpHost="${i#http://}";
@ -96,47 +126,41 @@ for i in "$@"; do
gunzip < "$filePath/${REPLY##*/}".nar.gz | nix-store --import;
done;
elif [ "$i" = "nix-daemon://" ] ; then
cat needed-paths | while read ; do
echo "Building $REPLY using nix-daemon" >&2
NIX_REMOTE=daemon @bindir@/nix-store -r "${NIX_STORE_DIR:-/nix/store}/${REPLY##*/}"
done;
cat derivers-closure | while read; do
echo "Realising $REPLY using nix-daemon" >&2
NIX_REMOTE=daemon @bindir@/nix-store -r "${REPLY}"
done;
NIX_REMOTE=daemon try_to_substitute;
refresh_critical_derivers;
NIX_REMOTE=daemon build_here;
elif [ "$i" = "nix-self://" ] ; then
cat needed-paths | while read ; do
echo "Building $REPLY using direct Nix build" >&2
NIX_REMOTE= @bindir@/nix-store -r "${NIX_STORE_DIR:-/nix/store}/${REPLY##*/}"
done;
cat derivers-closure | while read; do
echo "Realising $REPLY using direct Nix build" >&2
NIX_REMOTE= @bindir@/nix-store -r "${REPLY}"
done;
NIX_REMOTE= try_to_substitute;
refresh_critical_derivers;
NIX_REMOTE= build_here;
elif [ "$i" = "nix-daemon-fixed://" ] ; then
cat derivers-closure | while read; do
refresh_critical_derivers;
cat critical-derivers | while read; do
if egrep '"(md5|sha1|sha256)"' "$REPLY" &>/dev/null; then
echo "Realising $REPLY using nix-daemon" >&2
NIX_REMOTE=daemon @bindir@/nix-store -r "${REPLY}"
fi;
done;
elif [ "$i" = "nix-self-fixed://" ] ; then
cat derivers-closure | while read; do
refresh_critical_derivers;
cat critical-derivers | while read; do
if egrep '"(md5|sha1|sha256)"' "$REPLY" &>/dev/null; then
echo "Realising $REPLY using direct Nix build" >&2
NIX_REMOTE= @bindir@/nix-store -r "${REPLY}"
fi;
done;
elif [ "$i" = "nix-daemon-substitute://" ] ; then
cat needed-paths | while read ; do
echo "Substituting $REPLY using nix-daemon" >&2
NIX_REMOTE=daemon @bindir@/nix-store -r "${NIX_STORE_DIR:-/nix/store}/${REPLY##*/}"
done;
NIX_REMOTE=daemon try_to_substitute;
elif [ "$i" = "nix-self-substitute://" ] ; then
cat needed-paths | while read ; do
echo "Substituting $REPLY using direct Nix build" >&2
NIX_REMOTE= @bindir@/nix-store -r "${NIX_STORE_DIR:-/nix/store}/${REPLY##*/}"
done;
NIX_REMOTE= try_to_substitute;
elif [ "$i" = "nix-daemon-build://" ] ; then
refresh_critical_derivers;
NIX_REMOTE=daemon build_here;
elif [ "$i" = "nix-self-build://" ] ; then
refresh_critical_derivers;
NIX_REMOTE= build_here;
fi;
mv needed-paths wanted-paths;
cat wanted-paths | xargs nix-store --check-validity --print-invalid > needed-paths;