39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
#ifndef __MISC_H
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#define __MISC_H
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#include "derivations.hh"
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namespace nix {
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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
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`referrers' relation instead of the `references' relation is
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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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/* Given a set of paths that are to be built, return the set of
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derivations that will be built, and the set of output paths that
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will be substituted. */
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void queryMissing(const PathSet & targets,
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PathSet & willBuild, PathSet & willSubstitute);
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}
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#endif /* !__MISC_H */
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