#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);

bool substitutesAllowed(const Derivation & drv);


}
98afe95c3e4bc79c168cff2c65bd45fb94dc0c1'>commit</a><a href='/guix/diff/tests/guix-gc.sh?id=598afe95c3e4bc79c168cff2c65bd45fb94dc0c1'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/guix-gc.sh'>
<input type='hidden' name='id' value='598afe95c3e4bc79c168cff2c65bd45fb94dc0c1'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=598afe95c3e4bc79c168cff2c65bd45fb94dc0c1'>root</a>/<a href='/guix/log/tests?id=598afe95c3e4bc79c168cff2c65bd45fb94dc0c1'>tests</a>/<a href='/guix/log/tests/guix-gc.sh?id=598afe95c3e4bc79c168cff2c65bd45fb94dc0c1'>guix-gc.sh</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/guix-gc.sh?id=598afe95c3e4bc79c168cff2c65bd45fb94dc0c1&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-04-10 17:09:47 +0200'>2019-04-10</span></td><td><a href='/guix/commit/tests/guix-gc.sh?id=bacf980c76c94e7bda86220ca4bf662d0e34a45a'>guix gc: Add '--list-roots'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/gc.scm (show-help, %options): Add '--list-roots'.
(guix-gc)[list-roots]: New procedure.
Handle '--list-roots'.
* tests/guix-gc.sh: Test it.
* doc/guix.texi (Invoking guix gc): Document it.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-27 14:51:44 +0200'>2018-03-27</span></td><td><a href='/guix/commit/tests/guix-gc.sh?id=8980eea5ab6f89e7649d9abf0be2a9d49156f7d2'>guix gc: Add '--derivers'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/scripts/gc.scm (show-help, %options): Add '--derivers'.
(guix-gc): Handle 'list-derivers'.
* tests/guix-gc.sh: Add test.
* doc/guix.texi (Invoking guix gc): Document it.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-12-18 23:17:30 +0100'>2017-12-18</span></td><td><a href='/guix/commit/tests/guix-gc.sh?id=3caab236c49012643ab46afd7e82a287ec413ee8'>guix gc: '--verify=foo' is reported as an error.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://bugs.gnu.org/29761&gt;.
Reported by Martin Castillo &lt;castilma@uni-bremen.de&gt;.

* guix/scripts/gc.scm (argument-&gt;verify-options): New procedure.
(%options) ["verify"]: Adjust to use it.
* tests/guix-gc.sh: Add test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-11-13 10:10:13 +0100'>2017-11-13</span></td><td><a href='/guix/commit/tests/guix-gc.sh?id=ff23b47dbee038236386ddc2ed2fff4c77ad3aa1'>tests: 'guix-gc.sh' passes even when 'out' or 'drv' are defined as env vars.</a><span class='msg-avail'>...<span class='msg-tooltip'>This fixes a test failure exhibited by
fb17a89912c2a3738dae716e30481c11e1c6f0ac whereby assignments to 'out' in
guix-gc.sh would go to the 'out' environment variable, when it exists,
which in turn prevents garbage collection of $out.

* tests/guix-gc.sh: Add 'unset' invocations.
</span></span></td><td>Ludovic Courtès</td></tr>