* Moved some stuff to the Nixpkgs manual.
* Updated the release notes.
This commit is contained in:
Eelco Dolstra
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@ -14,6 +14,9 @@
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<listitem><para>TODO: Berkeley DB no longer needed.</para></listitem>
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<listitem><para>New substituter to copy from remotely mounted Nix
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stores (TODO: document).</para></listitem>
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<listitem><para><command>nix-store --dump-db / --load-db</command>.</para></listitem>
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<listitem><para>New primops:
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@ -25,6 +28,25 @@
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<varname>builtins.genericClosure</varname>.
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</para></listitem>
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<listitem><para>GC options: <option>--max-freed</option>,
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<option>--max-links</option>.</para></listitem>
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<listitem><para>TODO: Optimistic profile locking.</para></listitem>
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<listitem><para>The option <option>--dry-run</option> is now
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supported by <command>nix-store -r</command> and
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<command>nix-build</command>.</para></listitem>
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<listitem><para>The information previously shown by
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<option>--dry-run</option> (i.e., which derivations will be built
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and which paths will be substituted) is now always shown by
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<command>nix-env</command>, <command>nix-store -r</command> and
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<command>nix-build</command>. The total download size of
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substitutable paths is now also shown.</para></listitem>
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<listitem><para><command>nix-prefetch-url</command> now supports
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<literal>mirror://</literal> URLs.</para></listitem>
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</itemizedlist>
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</section>
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@ -1644,59 +1644,6 @@ impureEnvVars = ["http_proxy" "https_proxy" <replaceable>...</replaceable>];
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<section xml:id='sec-standard-environment'><title>The standard environment</title>
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<para>The standard build environment in the Nix Packages collection
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provides a basic environment for building Unix packages. It consists
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of the following packages:
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<itemizedlist>
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<listitem><para>The GNU C Compiler, configured with C and C++
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support. On Linux, the compiler has been patched to provide greater
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<quote>purity</quote> assurance. For instance, the compiler doesn't
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search in locations such as <filename>/usr/include</filename>. In
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fact, attempts to add such directories through the
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<option>-I</option> flag are filtered out. Likewise, the linker
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(from GNU binutils) doesn't search in standard locations such as
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<filename>/usr/lib</filename>. Programs built on Linux are linked
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against a GNU C Library that likewise doesn't search in the default
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system locations.</para></listitem>
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<listitem><para>GNU coreutils (contains a few dozen standard Unix
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commands).</para></listitem>
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<listitem><para>GNU findutils (contains
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<command>find</command>).</para></listitem>
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<listitem><para>GNU diffutils (contains <command>diff</command>,
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<command>cmp</command>).</para></listitem>
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<listitem><para>GNU <command>sed</command>.</para></listitem>
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<listitem><para>GNU <command>grep</command>.</para></listitem>
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<listitem><para>GNU <command>awk</command>.</para></listitem>
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<listitem><para>GNU <command>tar</command>.</para></listitem>
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<listitem><para><command>gzip</command> and
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<command>bzip2</command>.</para></listitem>
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<listitem><para>GNU Make. It has been patched to provide
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<quote>nested</quote> output that can be fed into the
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<command>nix-log2xml</command> command and
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<command>log2html</command> stylesheet to create a structured,
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readable output of the build steps performed by
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Make.</para></listitem>
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<listitem><para>Bash. This is the shell used for all builders in
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the Nix Packages collection. Not using <command>/bin/sh</command>
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removes a large source of portability problems.</para></listitem>
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<listitem><para>Patch.</para></listitem>
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</itemizedlist>
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</para>
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<para>The standard environment is used by passing it as an input
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called <envar>stdenv</envar> to the derivation, and then doing
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@ -1765,115 +1712,6 @@ myPostInstall() {
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</para>
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<para>The generic builder has a number of <emphasis>phases</emphasis>,
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each of which can be override in its entirety by setting the indicated
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variable. The phases are:
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<itemizedlist>
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<listitem>
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<para><function>unpackPhase</function> unpacks the source files
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listed in the <envar>src</envar> environment variable to the
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current directory. It supports <filename>tar</filename> files,
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optionally compressed with <command>gzip</command> or
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<command>bzip2</command>; Zip files (but note that the
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<command>unzip</command> command is not a part of the standard
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environment; you should add it as a build input yourself); and
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unpacked source trees (i.e., directories; they are copied
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verbatim). You can add support for other file types by setting
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the <varname>findUnpacker</varname> hook. This hook should set
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the variable <varname>unpackCmd</varname> to contain the command
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to be executed to unpack the file.</para>
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<para>After unpacking all source files,
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<function>unpackPhase</function> changes the current directory to
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the directory created by unpacking the sources. If there are
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multiple source directories, you should set
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<varname>sourceRoot</varname> to the name of the intended
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directory.</para>
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<para>It also calls the hook <varname>postUnpack</varname> after
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unpacking.</para>
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</listitem>
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<listitem><para><function>patchPhase</function> calls the
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<command>patch</command> command with the <option>-p1</option>
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option for each patch file listed in the <envar>patches</envar>
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variable.</para></listitem>
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<listitem>
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<para><function>configurePhase</function> runs the script called
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<filename>configure</filename> in the current directory with a
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<option>--prefix</option> set to the output path. You can add
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additional flags through the <varname>configureFlags</varname>
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variable. If <filename>configure</filename> does not exist,
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nothing happens.</para>
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<para>Before and after running <filename>configure</filename>, the
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hooks <varname>preConfigure</varname> and
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<varname>postConfigure</varname> are called, respectively.</para>
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</listitem>
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<listitem>
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<para><function>buildPhase</function> calls
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<command>make</command>. You can set flags for
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<command>make</command> through the <varname>makeFlags</varname>
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variable.</para>
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<para>Before and after running <command>make</command>, the hooks
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<varname>preBuild</varname> and <varname>postBuild</varname> are
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called, respectively.</para>
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</listitem>
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<listitem><para><function>checkPhase</function> calls <command>make
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check</command>, but only if the <varname>doCheck</varname> variable
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is set to <literal>1</literal>. Additional flags can be set through
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the <varname>checkFlags</varname> variable.</para></listitem>
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<listitem>
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<para><function>installPhase</function> calls <command>make
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install</command>. Additional flags can be set through the
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<varname>installFlags</varname> variable. It also strips any
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static libraries in the output path of debug information unless
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<varname>dontStrip</varname> is set to
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<literal>1</literal>.</para>
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<para>Before and after running <command>make install</command>,
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the hooks <varname>preInstall</varname> and
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<varname>postInstall</varname> are called, respectively.</para>
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</listitem>
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<listitem>
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<para><function>distPhase</function> calls <command>make
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dist</command>, but only if the <varname>doDist</varname> variable
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is set to <literal>1</literal>. Additional flags can be set
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through the <varname>distFlags</varname> variable. The resulting
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tarball is copied to the <filename>/tarballs</filename>
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subdirectory of the output path.</para>
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<para>Before and after running <command>make dist</command>, the
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hooks <varname>preDist</varname> and <varname>postDist</varname>
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are called, respectively.</para>
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</listitem>
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</itemizedlist>
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</para>
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<para>You can change the order in which phases are executed, or add
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new phases, by setting the <varname>phases</varname> variable. The
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default is <literal>patchPhase configurePhase buildPhase checkPhase
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installPhase distPhase</literal>.</para>
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</section>
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