# -*- mode: snippet -*-
# name: guix-commit-message-update-package
# key: update
# condition: git-commit-mode
# --

gnu: ${1:`(with-temp-buffer
           (magit-git-wash #'magit-diff-wash-diffs
             "diff" "--staged")
           (goto-char (point-min))
           (when (re-search-forward "(define-public \\(\\S-+\\)" nil 'noerror)
             (match-string-no-properties 1)))`}: Update to ${2:`(with-temp-buffer
    (magit-git-wash #'magit-diff-wash-diffs
      "diff" "--staged")
    (goto-char (point-min))
    (search-forward "name" nil 'noerror)
    (search-forward "+" nil 'noerror)   ; first change
    (when (and (search-forward "version " nil 'noerror)
               (looking-at-p "\""))
      (let ((end (save-excursion (search-forward "\")" nil 'noerror))))
        (when end
          (forward-char)
          (buffer-substring-no-properties (point) (- end 2))))))`}.

* `(car (magit-staged-files))` ($1): Update to $2.$0
`(mapconcat (lambda (file) (concat "* " file)) (cdr (magit-staged-files)) "\n")`/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a'>refs</a><a class='active' href='/guix/log/nix/libutil/util.hh'>log</a><a href='/guix/tree/nix/libutil/util.hh?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a'>tree</a><a href='/guix/commit/nix/libutil/util.hh?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a'>commit</a><a href='/guix/diff/nix/libutil/util.hh?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/nix/libutil/util.hh'>
<input type='hidden' name='id' value='c0f40e8c86358af4bdcec646bdb4b2237bf6279a'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
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<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
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<div class='path'>path: <a href='/guix/log/?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a'>root</a>/<a href='/guix/log/nix?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a'>nix</a>/<a href='/guix/log/nix/libutil?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a'>libutil</a>/<a href='/guix/log/nix/libutil/util.hh?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a'>util.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/util.hh?id=c0f40e8c86358af4bdcec646bdb4b2237bf6279a&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-12-08 22:30:07 +0100'>2020-12-08</span></td><td><a href='/guix/commit/nix/libutil/util.hh?id=2e308238ad09e9527f9b8c3ec4a90b6b05a93367'>daemon: 'Agent' constructor takes a list of environment variables.</a><span class='msg-avail'>...<span class='msg-tooltip'>* nix/libutil/util.hh (struct Agent)[Agent]: Add 'env' parameter.
* nix/libutil/util.cc (Agent::Agent): Honor it.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-09-14 15:42:55 +0200'>2020-09-14</span></td><td><a href='/guix/commit/nix/libutil/util.hh?id=ee9dff34f9317509cb2b833d07a0d5e01a36a4ae'>daemon: Move 'Agent' to libutil.</a><span class='msg-avail'>...<span class='msg-tooltip'>* nix/libstore/build.cc (DerivationGoal::tryBuildHook): Add "offload" to
'args' and pass settings.guixProgram as the first argument to
Agent::Agent.
(pathNullDevice, commonChildInit, Agent, Agent::Agent)
(Agent::~Agent): Move to...
* nix/libutil/util.cc: ... here.
* nix/libutil/util.hh (struct Agent, commonChildInit): New
declarations.
</span></span></td><td>Ludovic Courtès</td></tr>