#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);

bool willBuildLocally(const Derivation & drv);

bool substitutesAllowed(const Derivation & drv);


}
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<div class='path'>path: <a href='/guix/log/?id=04154c650d9a4898928c5e83e0f6a49dbe3781b3'>root</a>/<a href='/guix/log/.mailmap?id=04154c650d9a4898928c5e83e0f6a49dbe3781b3'>.mailmap</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/.mailmap?id=04154c650d9a4898928c5e83e0f6a49dbe3781b3&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-01-11 14:48:00 -0500'>2022-01-11</span></td><td><a href='/guix/commit/.mailmap?id=7f779286df7e8636d901f4734501902cc934a72f'>Update mailmap.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .mailmap: Add entry for Zheng Junjie.
</span></span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2021-11-06 16:03:43 +0100'>2021-11-06</span></td><td><a href='/guix/commit/.mailmap?id=567c4f4495fd1681bc6bd1ca3e9d1a87e120ac61'>Update mailmap and copyright assignments for Liliana Marie Prikler.</a><span class='msg-avail'>...<span class='msg-tooltip'>Use full names everywhere.

* .mailmap: Use full name for Liliana Marie Prikler.
* gnu/packages/zig.scm: Likewise.
</span></span></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2021-09-06 12:15:57 +0200'>2021-09-06</span></td><td><a href='/guix/commit/.mailmap?id=7158f8e4e9f81dbe004789018dcf06a5fe87d602'>Update mailmap.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .mailmap: Add entry for Liliana Marie Prikler.
</span></span></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2021-09-04 12:25:17 +0200'>2021-09-04</span></td><td><a href='/guix/commit/.mailmap?id=1fd0bf60ea261fac426052386029ead0ac68cad1'>Update mailmap.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .mailmap: Alias all my contributions to the same identity.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-07-27 12:34:56 -0400'>2021-07-27</span></td><td><a href='/guix/commit/.mailmap?id=c0e6e8d25e3750a35bebc80469ee86e7826bd769'>Update mailmap.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .mailmap: Add entry for Christine Lemmer-Webber.
</span></span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2021-07-08 09:48:22 +0200'>2021-07-08</span></td><td><a href='/guix/commit/.mailmap?id=0a04c25482c4d848a6a29711fccf5682319e26aa'>mailmap: Update entries for Matthew James Kraai.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .mailmap: Change name for Matthew James Kraai.
* gnu/packages/lisp-xyz.scm, gnu/packages/python-xyz.scm,
gnu/packages/rust.scm: Likewise.

Signed-off-by: Nicolas Goaziou &lt;mail@nicolasgoaziou.fr&gt;
</span></span></td><td>Matthew James Kraai</td></tr>
<tr><td><span title='2021-06-23 22:29:23 -0500'>2021-06-23</span></td><td><a href='/guix/commit/.mailmap?id=6d388103a4ed8f14f1ac6ac7a2ff22c5fa6b8cd4'>gnu: Add Sollya.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/algebra.scm (sollya): New variable.
* .mailmap: Adjust "proper email" for `git commit`.
</span></span></td><td>Eric Bavier</td></tr>
<tr><td><span title='2021-04-21 18:02:27 -0400'>2021-04-21</span></td><td><a href='/guix/commit/.mailmap?id=449844474da86b5f10a4c5e4f1744e1e3a716d6e'>Update email address for Kei.</a><span class='msg-avail'>...<span class='msg-tooltip'>* .mailmap: Remove obsolete email for Kei.
</span></span></td><td>Kei Kebreau</td></tr>