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authorLudovic Courtès <ludo@gnu.org>2014-12-17 23:00:42 +0100
committerLudovic Courtès <ludo@gnu.org>2014-12-19 22:47:37 +0100
commit36457566f9917dc7c0c348d012816a2ca333ef1b (patch)
tree6f1d22a195ea2483b9ce539227d65e8e2a9c137d /nix/libstore/misc.hh
parent2c7ee1672029aa43afb509af5b5f7261244fa2d1 (diff)
Merge branch 'nix' into 'master'.
Diffstat (limited to 'nix/libstore/misc.hh')
-rw-r--r--nix/libstore/misc.hh38
1 files changed, 38 insertions, 0 deletions
diff --git a/nix/libstore/misc.hh b/nix/libstore/misc.hh
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+#pragma once
+
+#include "derivations.hh"
+
+
+namespace nix {
+
+
+/* Read a derivation, after ensuring its existence through
+ ensurePath(). */
+Derivation derivationFromPath(StoreAPI & store, const Path & drvPath);
+
+/* Place in `paths' the set of all store paths in the file system
+ closure of `storePath'; that is, all paths than can be directly or
+ indirectly reached from it. `paths' is not cleared. If
+ `flipDirection' is true, the set of paths that can reach
+ `storePath' is returned; that is, the closures under the
+ `referrers' relation instead of the `references' relation is
+ returned. */
+void computeFSClosure(StoreAPI & store, const Path & path,
+ PathSet & paths, bool flipDirection = false,
+ bool includeOutputs = false, bool includeDerivers = false);
+
+/* Return the path corresponding to the output identifier `id' in the
+ given derivation. */
+Path findOutput(const Derivation & drv, string id);
+
+/* Given a set of paths that are to be built, return the set of
+ derivations that will be built, and the set of output paths that
+ will be substituted. */
+void queryMissing(StoreAPI & store, const PathSet & targets,
+ PathSet & willBuild, PathSet & willSubstitute, PathSet & unknown,
+ unsigned long long & downloadSize, unsigned long long & narSize);
+
+bool willBuildLocally(const Derivation & drv);
+
+
+}