#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=7baba7ab581114747b9f6cd03e543d5913e917b5'>root</a>/<a href='/guix/log/gnu?id=7baba7ab581114747b9f6cd03e543d5913e917b5'>gnu</a>/<a href='/guix/log/gnu/services?id=7baba7ab581114747b9f6cd03e543d5913e917b5'>services</a>/<a href='/guix/log/gnu/services/shepherd.scm?id=7baba7ab581114747b9f6cd03e543d5913e917b5'>shepherd.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/gnu/services/shepherd.scm?id=7baba7ab581114747b9f6cd03e543d5913e917b5&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-11-18 15:44:39 +0100'>2022-11-18</span></td><td><a href='/guix/commit/gnu/services/shepherd.scm?id=ebc7de6a1efb702fd0364128cbde19697966c4f4'>services: shepherd: Define 'shepherd-configuration-action' helper.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-09-29 22:56:56 +0200'>2022-09-29</span></td><td><a href='/guix/commit/gnu/services/shepherd.scm?id=168a7933c0e138dc7061a3f0dc96871e16da5c5f'>services: shepherd: Leave the finalization thread in peace.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-09-13 00:31:04 +0200'>2022-09-13</span></td><td><a href='/guix/commit/gnu/services/shepherd.scm?id=66fdaf3677e5f7833a02096a2bcb1e9653efbb16'>services: shepherd: Install O_CLOEXEC variant of 'call-with-input-file' &amp; co.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-09-11 00:16:57 +0200'>2022-09-11</span></td><td><a href='/guix/commit/gnu/services/shepherd.scm?id=081bb6a7bd9642ee3d5bb9b697c24f89535416de'>services: shepherd: Open /dev/null as O_CLOEXEC.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-10 00:17:40 +0200'>2022-04-10</span></td><td><a href='/guix/commit/gnu/services/shepherd.scm?id=eeb8ac43c8c0b0cc69422766070dbefc55f5c5c1'>services: shepherd: Do not unload transient services.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-07 00:08:56 +0200'>2022-04-07</span></td><td><a href='/guix/commit/gnu/services/shepherd.scm?id=400c9ed3d779308e56038305d40cd93acb496180'>services: shepherd: Default to version 0.9.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-30 01:08:55 +0100'>2021-11-30</span></td><td><a href='/guix/commit/gnu/services/shepherd.scm?id=892f1b7273d57b25940700877a02618fe826cc08'>services: Accept &lt;inferior-package&gt;s in lieu of &lt;package&gt;s.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>