37 lines
1.4 KiB
C++
37 lines
1.4 KiB
C++
#ifndef __BUILD_H
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#define __BUILD_H
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#include "derivations.hh"
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/* Ensure that the output paths of the derivation are valid. If they
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are already valid, this is a no-op. Otherwise, validity can
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be reached in two ways. First, if the output paths have
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substitutes, then those can be used. Second, the output paths can
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be created by running the builder, after recursively building any
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sub-derivations. */
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void buildDerivations(const PathSet & drvPaths);
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/* Ensure that a path is valid. If it is not currently valid, it may
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be made valid by running a substitute (if defined for the path). */
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void ensurePath(const Path & storePath);
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/* Read a derivation, after ensuring its existence through
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ensurePath(). */
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Derivation derivationFromPath(const Path & drvPath);
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/* Place in `paths' the set of all store paths in the file system
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closure of `storePath'; that is, all paths than can be directly or
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indirectly reached from it. `paths' is not cleared. If
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`flipDirection' is true, the set of paths that can reach
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`storePath' is returned; that is, the closures under the `referers'
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relation instead of the `references' relation is returned. */
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void computeFSClosure(const Path & storePath,
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PathSet & paths, bool flipDirection = false);
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/* Return the path corresponding to the output identifier `id' in the
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given derivation. */
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Path findOutput(const Derivation & drv, string id);
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#endif /* !__BUILD_H */
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