forked from lix-project/lix
nix-shell: Add --packages flag
This allows you to easily set up a build environment containing the specified packages from Nixpkgs. For example: $ nix-shell -p sqlite xorg.libX11 hello will start a shell in which the given packages are present.
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@ -18,7 +18,6 @@
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<refsynopsisdiv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<cmdsynopsis>
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<command>nix-shell</command>
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<command>nix-shell</command>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
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<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
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<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
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<arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
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<arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
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<arg>
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<arg>
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@ -31,7 +30,16 @@
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<arg><option>--command</option> <replaceable>cmd</replaceable></arg>
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<arg><option>--command</option> <replaceable>cmd</replaceable></arg>
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<arg><option>--exclude</option> <replaceable>regexp</replaceable></arg>
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<arg><option>--exclude</option> <replaceable>regexp</replaceable></arg>
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<arg><option>--pure</option></arg>
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<arg><option>--pure</option></arg>
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<arg><replaceable>path</replaceable></arg>
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<group choice='req'>
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<group choice='plain'>
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<group>
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<arg choice='plain'><option>--packages</option></arg>
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<arg choice='plain'><option>-p</option></arg>
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</group>
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<replaceable>packages</replaceable>
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</group>
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<arg><replaceable>path</replaceable></arg>
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</group>
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</cmdsynopsis>
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</cmdsynopsis>
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</refsynopsisdiv>
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</refsynopsisdiv>
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@ -114,6 +122,18 @@ also <xref linkend="sec-common-options" />.</phrase></para>
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</varlistentry>
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</varlistentry>
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<varlistentry><term><option>--packages</option> / <option>-p</option></term>
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<listitem><para>Set up an environment in which the specified
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packages are present. The command line arguments are interpreted
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as attribute names inside the Nix Packages collection. Thus,
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<literal>nix-shell -p libjpeg openjdk</literal> will start a shell
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in which the packages denoted by the attribute names
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<varname>libjpeg</varname> and <varname>openjdk</varname> are
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present.</para></listitem>
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</varlistentry>
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</variablelist>
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</variablelist>
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<para>The following common options are supported:</para>
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<para>The following common options are supported:</para>
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@ -155,6 +175,14 @@ the following starts a shell containing the packages
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$ nix-shell -E 'with import <nixpkgs> { }; runCommand "dummy" { buildInputs = [ sqlite xorg.libX11 ]; } ""'
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$ nix-shell -E 'with import <nixpkgs> { }; runCommand "dummy" { buildInputs = [ sqlite xorg.libX11 ]; } ""'
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</screen>
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</screen>
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A shorter way to do the same is:
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<screen>
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$ nix-shell -p sqlite xorg.libX11
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[nix-shell]$ echo $NIX_LDFLAGS
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… -L/nix/store/j1zg5v…-sqlite-3.8.0.2/lib -L/nix/store/0gmcz9…-libX11-1.6.1/lib …
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</screen>
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</para>
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</para>
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</refsection>
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</refsection>
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@ -12,6 +12,7 @@ my $verbose = 0;
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my $runEnv = $0 =~ /nix-shell$/;
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my $runEnv = $0 =~ /nix-shell$/;
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my $pure = 0;
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my $pure = 0;
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my $fromArgs = 0;
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my $fromArgs = 0;
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my $packages = 0;
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my @instArgs = ();
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my @instArgs = ();
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my @buildArgs = ();
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my @buildArgs = ();
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@ -150,6 +151,10 @@ for (my $n = 0; $n < scalar @ARGV; $n++) {
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push @instArgs, "--expr";
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push @instArgs, "--expr";
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}
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}
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elsif ($arg eq "--packages" || $arg eq "-p") {
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$packages = 1;
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}
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elsif (substr($arg, 0, 1) eq "-") {
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elsif (substr($arg, 0, 1) eq "-") {
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push @buildArgs, $arg;
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push @buildArgs, $arg;
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}
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}
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@ -159,7 +164,12 @@ for (my $n = 0; $n < scalar @ARGV; $n++) {
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}
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}
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}
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}
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if (!$fromArgs) {
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if ($packages) {
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push @instArgs, "--expr";
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@exprs = (
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'with import <nixpkgs> { }; runCommand "shell" { buildInputs = [ '
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. (join " ", map { "($_)" } @exprs) . ']; } ""');
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} elsif (!$fromArgs) {
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@exprs = ("shell.nix") if scalar @exprs == 0 && $runEnv && -e "shell.nix";
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@exprs = ("shell.nix") if scalar @exprs == 0 && $runEnv && -e "shell.nix";
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@exprs = ("default.nix") if scalar @exprs == 0;
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@exprs = ("default.nix") if scalar @exprs == 0;
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}
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}
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