#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=271c7459141e5879e5bb789c8901351b0363b914'>root</a>/<a href='/guix/log/nix?id=271c7459141e5879e5bb789c8901351b0363b914'>nix</a>/<a href='/guix/log/nix/libutil?id=271c7459141e5879e5bb789c8901351b0363b914'>libutil</a>/<a href='/guix/log/nix/libutil/serialise.hh?id=271c7459141e5879e5bb789c8901351b0363b914'>serialise.hh</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/nix/libutil/serialise.hh?id=271c7459141e5879e5bb789c8901351b0363b914&amp;showmsg=1'>Expand</a>)</th><th class='left<tr><td><span title='2019-11-08 21:32:45 +0100'>2019-11-08</span></td><td><a href='/guix/commit/gnu/services/audio.scm?id=970cb5ceceaa85765230a9f896a43783cdcb4e6c'>services: mpd: Connect to the user's PulseAudio socket.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/audio.scm (mpd-shepherd-service): Set the XDG_RUNTIME_DIR
environment variable.

Signed-off-by: Tobias Geerinckx-Rice &lt;me@tobias.gr&gt;
</span></span></td><td>Robert Smith</td></tr>
<tr><td><span title='2019-10-29 15:14:22 +0100'>2019-10-29</span></td><td><a href='/guix/commit/gnu/services/audio.scm?id=878e0e1bb0d15809c6582436d53498f3e6385524'>gnu: mpd-service-type: Support configuration of outputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/audio.scm (&lt;mpd-output&gt;): New record type.
(&lt;mpd-configuration&gt;)[outputs]: New field.
(mpd-output, mpd-output?, mpd-output-&gt;string): New procedures.
(mpd-config-&gt;file): Use mpd-output-&gt;string.
* doc/guix.texi (Audio Services): Document mpd-output fields.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2019-03-15 23:27:59 +0100'>2019-03-15</span></td><td><a href='/guix/commit/gnu/services/audio.scm?id=c71b7b5b3740177f0df6d3565dcc356ceda1acba'>services: mpd: add more configuration options</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/audio.scm (&lt;mpd-configuration&gt;): Add 'db-file', 'state-file'
  and 'sticker-file' fields.
* doc/guix.texi (Music Player Daemon): Document it.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>nixo</td></tr>
<tr><td><span title='2017-11-05 15:29:52 +0100'>2017-11-05</span></td><td><a href='/guix/commit/gnu/services/audio.scm?id=21b71b01e9c2264c31ef30451c152bb38cc9e635'>services: Add 'description' fields.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/admin.scm (rottlog-service-type)
(tailon-service-type): Add 'description' field.
* gnu/services/audio.scm (mpd-service-type): Likewise.
* gnu/services/avahi.scm (avahi-service-type): Likewise.
* gnu/services/ssh.scm (lsh-service-type)
(openssh-service-type, dropbear-service-type): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-08-31 14:43:26 +0200'>2017-08-31</span></td><td><a href='/guix/commit/gnu/services/audio.scm?id=b6dc69af1de806e8b3a70e9a1afe0e1590da5480'>services: mpd: Remove the mpd-file field.</a><span class='msg-avail'>...<span class='msg-tooltip'>Since MPD switches user, the pid-file must be in a writable dir.  This
is now always /var/run/mpd/(user)/pid.

* gnu/services/audio.scm (mpd-service-type): Add a activation-service
extension.
(&lt;mpd-configuration&gt;)[pid-file]: Remove.
(mpd-service): Rename to...
(mpd-shepherd-service): ... this.
(mpd-file-name, mpd-service-activation): New procedure.
* doc/guix.texi (Audio Services): Document the changes.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Peter Mikkelsen</td></tr>