#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);

bool willBuildLocally(const Derivation & drv);

bool substitutesAllowed(const Derivation & drv);


}
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<div class='path'>path: <a href='/guix/log/?id=96a9675b55844c8ab3e81ee53ffaad35d289a845'>root</a>/<a href='/guix/log/tests?id=96a9675b55844c8ab3e81ee53ffaad35d289a845'>tests</a>/<a href='/guix/log/tests/cache.scm?id=96a9675b55844c8ab3e81ee53ffaad35d289a845'>cache.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/cache.scm?id=96a9675b55844c8ab3e81ee53ffaad35d289a845&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2017-04-22 14:42:15 +0200'>2017-04-22</span></td><td><a href='/guix/commit/tests/cache.scm?id=25a49294caf2386e65fc1b12a2508324be0b1cc2'>cache: Work around 'time-monotonic' bug in Guile 2.2.2.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/cache.scm (time-monotonic) [guile-2.2]: New variable.
* tests/cache.scm (time-monotonic) [guile-2.2]: Likewise.
* guix/build/download.scm (time-monotonic) [guile-2.2]: Adjust comment:
it's a 2.2.2 bug.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-04-18 23:19:30 +0200'>2017-04-18</span></td><td><a href='/guix/commit/tests/cache.scm?id=2ea2aac6e9d58a07c029504f94fb5015cd407e31'>Add (guix cache) and use it in (guix scripts substitute).</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/cache.scm, tests/cache.scm: New files.
* Makefile.am (MODULES, SCM_TESTS): Add them.
* guix/scripts/substitute.scm (obsolete?): Remove.
(remove-expired-cached-narinfos): Rename to...
(cached-narinfo-expiration-time): ... this.  Remove the removal part and
only keep the expiration time part.
(narinfo-cache-directories): Add optional 'directory' parameter and
honor it.
(maybe-remove-expired-cached-narinfo): Remove.
(cached-narinfo-files): New procedure.
(guix-substitute): Use 'maybe-remove-expired-cache-entries' instead of
'maybe-remove-expired-cached-narinfo'.
</span></span></td><td>Ludovic Courtès</td></tr>