diff options
Diffstat (limited to 'doc/manual')
| -rw-r--r-- | doc/manual/writing-nix-expressions.xml | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/doc/manual/writing-nix-expressions.xml b/doc/manual/writing-nix-expressions.xml index b83f46899dde..ce6c1f4addc3 100644 --- a/doc/manual/writing-nix-expressions.xml +++ b/doc/manual/writing-nix-expressions.xml @@ -1,4 +1,4 @@ -chapter xmlns="http://docbook.org/ns/docbook" +<chapter xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id='chap-writing-nix-expressions'> @@ -526,16 +526,15 @@ genericBuild <co xml:id='ex-hello-builder2-co-3' /></programlisting> <filename>bin</filename> subdirectory, it's added to <envar>PATH</envar>; if it has a <filename>include</filename> subdirectory, it's added to GCC's header search path; and so - on. - <footnote><para>How does it work? setup tries sourcing - $out/nix-support/setup-hook of all dependencies - thereby defining environment variables. - If you have A depending on B depending on C - you can force the setup-hooks of C beeing sourced when evaluating - expression A by using - <programlisting>propagatedBuildInputs=[ C ];</programlisting> - instead of buildInputs when defining derivation B. - </para></footnote></para> + on.<footnote><para>How does it work? <filename>setup</filename> + tries to source the file + <filename><replaceable>pkg</replaceable>/nix-support/setup-hook</filename> + of all dependencies. These “setup hooks” can then set up whatever + environment variables they want; for instance, the setup hook for + Perl sets the <envar>PERL5LIB</envar> environment variable to + contain the <filename>lib/site_perl</filename> directories of all + inputs.</para></footnote> + </para> </callout> @@ -544,7 +543,7 @@ genericBuild <co xml:id='ex-hello-builder2-co-3' /></programlisting> <para>The function <function>genericBuild</function> is defined in the file <literal>$stdenv/setup</literal>.</para> - </callout> looks for a file nix-support/setup-hook within the derivation path. + </callout> <callout arearefs='ex-hello-builder2-co-3'> @@ -1226,9 +1225,9 @@ set, the attributes of which specify the inputs of the build.</para> They are simply concatenated, separated by spaces.</para></listitem> - <listitem><para><emphasis>true</emphasis> is passed as - <emphasis>1</emphasis>, <emphasis>false</emphasis> - and <emphasis>null</emphasis> are passed as empty string. + <listitem><para><literal>true</literal> is passed as the string + <literal>1</literal>, <literal>false</literal> and + <literal>null</literal> are passed as an empty string. </para></listitem> </itemizedlist> |