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tarball-ttl: document

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Incorporates text from Niklas Hambüchen in #2978

Closes #1115
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Graham Christensen 2019-05-21 22:29:23 -04:00
parent 4d829916e7
commit 648bdf153d
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2 changed files with 27 additions and 2 deletions
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4
doc/manual/expressions/builtins.xml
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@ -347,7 +347,7 @@ stdenv.mkDerivation { … }
You can change the cache timeout either on the command line with
<option>--option tarball-ttl <replaceable>number of seconds</replaceable></option> or
in the Nix configuration file with this option:
<literal>tarball-ttl <replaceable>number of seconds to cache</replaceable></literal>.
<literal><xref linkend="conf-tarball-ttl" /> <replaceable>number of seconds to cache</replaceable></literal>.
</para>
<para>Note that when obtaining the hash with <varname>nix-prefetch-url
@ -498,7 +498,7 @@ stdenv.mkDerivation { … }
fetch the latest version of a remote branch.
</para>
<note><para>Nix will refetch the branch in accordance to
<option>tarball-ttl</option>.</para></note>
<xref linkend="conf-tarball-ttl" />.</para></note>
<note><para>This behavior is disabled in
<emphasis>Pure evaluation mode</emphasis>.</para></note>
<programlisting>builtins.fetchGit {