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docs: mention source of env variables used by impureEnvVars.

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Gleb Peregud 2018-05-02 22:07:23 +02:00
parent 53ec5ac69f
commit 5ba6395378
1 changed files with 7 additions and 1 deletions
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8
doc/manual/expressions/advanced-attributes.xml
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@ -112,7 +112,13 @@ impureEnvVars = [ "http_proxy" "https_proxy" <replaceable>...</replaceable> ];
linkend="fixed-output-drvs">fixed-output derivations</link>, where linkend="fixed-output-drvs">fixed-output derivations</link>, where
impurities such as these are okay since (the hash of) the output impurities such as these are okay since (the hash of) the output
is known in advance. It is ignored for all other is known in advance. It is ignored for all other
derivations.</para></listitem> derivations.</para>
<warning><para><varname>impureEnvVars</varname> implementation takes
environment variables from the current builder process. When a daemon is
building its environmental variables are used. Without the daemon, the
environmental variables come from the environment of the
<command>nix-build</command>.</para></warning></listitem>
</varlistentry> </varlistentry>