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Merge pull request #7936 from thinkpad20/set_arbitrary_env_variables_python
Add makeWrapperArgs argument to buildPythonPackage
This commit is contained in:
Domen Kožar
commit
0f6f4004f3
@ -245,14 +245,14 @@ are provided with all modules included.</para>
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Name of the folder in <literal>${python}/lib/</literal> for corresponding interpreter.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>interpreter</varname></term>
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<listitem><para>
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Alias for <literal>${python}/bin/${executable}.</literal>
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>buildEnv</varname></term>
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<listitem><para>
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@ -260,29 +260,29 @@ are provided with all modules included.</para>
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See <xref linkend="python-build-env" /> for usage and documentation.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>sitePackages</varname></term>
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<listitem><para>
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Alias for <literal>lib/${libPrefix}/site-packages</literal>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>executable</varname></term>
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<listitem><para>
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Name of the interpreter executable, ie <literal>python3.4</literal>.
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</para></listitem>
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</varlistentry>
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</variablelist>
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<section xml:id="build-python-package"><title><varname>buildPythonPackage</varname> function</title>
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<para>
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The function is implemented in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/python-modules/generic/default.nix">
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<filename>pkgs/development/python-modules/generic/default.nix</filename></link>.
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Example usage:
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<programlisting language="nix">
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twisted = buildPythonPackage {
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name = "twisted-8.1.0";
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@ -308,27 +308,27 @@ twisted = buildPythonPackage {
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<varname>python27Packages</varname>, <varname>python32Packages</varname>, <varname>python33Packages</varname>,
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<varname>python34Packages</varname> and <varname>pypyPackages</varname>.
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</para>
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<para>
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<function>buildPythonPackage</function> mainly does four things:
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<orderedlist>
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<listitem><para>
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In the <varname>configurePhase</varname>, it patches
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<literal>setup.py</literal> to always include setuptools before
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distutils for monkeypatching machinery to take place.
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</para></listitem>
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<listitem><para>
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In the <varname>buildPhase</varname>, it calls
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In the <varname>buildPhase</varname>, it calls
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<literal>${python.interpreter} setup.py build ...</literal>
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</para></listitem>
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<listitem><para>
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In the <varname>installPhase</varname>, it calls
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In the <varname>installPhase</varname>, it calls
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<literal>${python.interpreter} setup.py install ...</literal>
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</para></listitem>
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<listitem><para>
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In the <varname>postFixup</varname> phase, <literal>wrapPythonPrograms</literal>
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bash function is called to wrap all programs in <filename>$out/bin/*</filename>
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@ -337,23 +337,23 @@ twisted = buildPythonPackage {
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</para></listitem>
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</orderedlist>
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</para>
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<para>By default <varname>doCheck = true</varname> is set and tests are run with
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<para>By default <varname>doCheck = true</varname> is set and tests are run with
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<literal>${python.interpreter} setup.py test</literal> command in <varname>checkPhase</varname>.</para>
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<para><varname>propagatedBuildInputs</varname> packages are propagated to user environment.</para>
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<para>
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By default <varname>meta.platforms</varname> is set to the same value
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as the interpreter unless overriden otherwise.
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</para>
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<variablelist>
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<title>
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<varname>buildPythonPackage</varname> parameters
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(all parameters from <varname>mkDerivation</varname> function are still supported)
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</title>
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<varlistentry>
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<term><varname>namePrefix</varname></term>
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<listitem><para>
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@ -363,7 +363,7 @@ twisted = buildPythonPackage {
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if you're packaging an application or a command line tool.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>disabled</varname></term>
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<listitem><para>
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@ -373,21 +373,21 @@ twisted = buildPythonPackage {
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for examples.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>setupPyInstallFlags</varname></term>
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<listitem><para>
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List of flags passed to <command>setup.py install</command> command.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>setupPyBuildFlags</varname></term>
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<listitem><para>
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List of flags passed to <command>setup.py build</command> command.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>pythonPath</varname></term>
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<listitem><para>
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@ -396,21 +396,21 @@ twisted = buildPythonPackage {
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(contrary to <varname>propagatedBuildInputs</varname>).
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>preShellHook</varname></term>
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<listitem><para>
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Hook to execute commands before <varname>shellHook</varname>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>postShellHook</varname></term>
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<listitem><para>
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Hook to execute commands after <varname>shellHook</varname>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>distutilsExtraCfg</varname></term>
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<listitem><para>
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@ -419,15 +419,29 @@ twisted = buildPythonPackage {
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configuration).
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>makeWrapperArgs</varname></term>
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<listitem><para>
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A list of strings. Arguments to be passed to
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<varname>makeWrapper</varname>, which wraps generated binaries. By
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default, the arguments to <varname>makeWrapper</varname> set
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<varname>PATH</varname> and <varname>PYTHONPATH</varname> environment
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variables before calling the binary. Additional arguments here can
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allow a developer to set environment variables which will be
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available when the binary is run. For example,
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<varname>makeWrapperArgs = ["--set FOO BAR" "--set BAZ QUX"]</varname>.
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</para></listitem>
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</varlistentry>
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</variablelist>
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</section>
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<section xml:id="python-build-env"><title><function>python.buildEnv</function> function</title>
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<para>
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Create Python environments using low-level <function>pkgs.buildEnv</function> function. Example <filename>default.nix</filename>:
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<programlisting language="nix">
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<![CDATA[with import <nixpkgs> {};
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@ -436,31 +450,31 @@ python.buildEnv.override {
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ignoreCollisions = true;
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}]]>
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</programlisting>
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Running <command>nix-build</command> will create
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<filename>/nix/store/cf1xhjwzmdki7fasgr4kz6di72ykicl5-python-2.7.8-env</filename>
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with wrapped binaries in <filename>bin/</filename>.
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</para>
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<variablelist>
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<title>
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<function>python.buildEnv</function> arguments
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</title>
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<varlistentry>
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<term><varname>extraLibs</varname></term>
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<listitem><para>
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List of packages installed inside the environment.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>postBuild</varname></term>
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<listitem><para>
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Shell command executed after the build of environment.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>ignoreCollisions</varname></term>
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<listitem><para>
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@ -504,13 +518,13 @@ exist in community to help save time. No tool is preferred at the moment.
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additional logic inside <varname>shellPhase</varname> to run
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<command>${python.interpreter} setup.py develop</command> for the package.
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</para>
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<warning><para><varname>shellPhase</varname> is executed only if <filename>setup.py</filename>
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exists.</para></warning>
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<para>
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Given a <filename>default.nix</filename>:
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<programlisting language="nix">
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<![CDATA[with import <nixpkgs> {};
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@ -522,18 +536,18 @@ buildPythonPackage {
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src = ./.;
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}]]>
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</programlisting>
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Running <command>nix-shell</command> with no arguments should give you
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the environment in which the package would be build with
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<command>nix-build</command>.
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</para>
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<para>
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Shortcut to setup environments with C headers/libraries and python packages:
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<programlisting language="bash">$ nix-shell -p pythonPackages.pyramid zlib libjpeg git</programlisting>
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</para>
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<note><para>
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There is a boolean value <varname>lib.inNixShell</varname> set to
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<varname>true</varname> if nix-shell is invoked.
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@ -562,12 +576,12 @@ buildPythonPackage {
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Known bug in setuptools <varname>install_data</varname> does not respect --prefix</link>. Example of
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such package using the feature is <filename>pkgs/tools/X11/xpra/default.nix</filename>. As workaround
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install it as an extra <varname>preInstall</varname> step:
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<programlisting>${python.interpreter} setup.py install_data --install-dir=$out --root=$out
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sed -i '/ = data_files/d' setup.py</programlisting>
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>Rationale of non-existent global site-packages</term>
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<listitem><para>
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@ -616,7 +630,7 @@ sed -i '/ = data_files/d' setup.py</programlisting>
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this into a nix expression that contains all Gem dependencies automatically.</para>
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<para>For example, to package sensu, we did:</para>
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<screen>
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<![CDATA[$ cd pkgs/servers/monitoring
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$ mkdir sensu
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@ -876,7 +890,7 @@ fileSystem = buildLuaPackage {
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src = fetchurl {
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url = "https://github.com/keplerproject/luafilesystem/archive/v1_6_2.tar.gz";
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sha256 = "1n8qdwa20ypbrny99vhkmx8q04zd2jjycdb5196xdhgvqzk10abz";
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};
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};
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meta = {
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homepage = "https://github.com/keplerproject/luafilesystem";
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hydraPlatforms = stdenv.lib.platforms.linux;
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@ -887,7 +901,7 @@ fileSystem = buildLuaPackage {
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</para>
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<para>
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Though, more complicated package should be placed in a seperate file in
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Though, more complicated package should be placed in a seperate file in
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<link
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xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/lua-modules"><filename>pkgs/development/lua-modules</filename></link>.
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</para>
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@ -47,11 +47,19 @@
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# Execute after shell hook
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, postShellHook ? ""
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# Additional arguments to pass to the makeWrapper function, which wraps
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# generated binaries.
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, makeWrapperArgs ? []
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, ... } @ attrs:
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# Keep extra attributes from `attrs`, e.g., `patchPhase', etc.
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if disabled then throw "${name} not supported for interpreter ${python.executable}" else python.stdenv.mkDerivation (attrs // {
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if disabled
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then throw "${name} not supported for interpreter ${python.executable}"
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else
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python.stdenv.mkDerivation (attrs // {
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inherit doCheck;
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name = namePrefix + name;
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@ -41,9 +41,16 @@ wrapPythonProgramsIn() {
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# wrapProgram creates the executable shell script described
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# above. The script will set PYTHONPATH and PATH variables.!
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# (see pkgs/build-support/setup-hooks/make-wrapper.sh)
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wrapProgram $f \
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--prefix PYTHONPATH ':' $program_PYTHONPATH \
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--prefix PATH ':' $program_PATH
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local wrap_args="$f \
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--prefix PYTHONPATH ':' $program_PYTHONPATH \
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--prefix PATH ':' $program_PATH"
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# Add any additional arguments provided by makeWrapperArgs
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# argument to buildPythonPackage.
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for arg in $makeWrapperArgs; do
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wrap_args="$wrap_args $arg"
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done
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wrapProgram $wrap_args
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fi
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fi
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done
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