Merge pull request #2132 from gleber/docs-impureEnvVars-env-source

docs: mention source of env variables used by `impureEnvVars`.
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Peter Simons 2018-05-03 16:19:10 +02:00 committed by GitHub
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@ -112,7 +112,13 @@ impureEnvVars = [ "http_proxy" "https_proxy" <replaceable>...</replaceable> ];
linkend="fixed-output-drvs">fixed-output derivations</link>, where
impurities such as these are okay since (the hash of) the output
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>