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| -rw-r--r-- | doc/manual/package-management.xml | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/doc/manual/package-management.xml b/doc/manual/package-management.xml index 3d8bad1cf..927719e93 100644 --- a/doc/manual/package-management.xml +++ b/doc/manual/package-management.xml @@ -55,7 +55,23 @@ bzip2-1.0.2 ...</screen> where <literal>nixpkgs-<replaceable>version</replaceable></literal> is -where you’ve unpacked the release.</para> +where you’ve unpacked the release. The flag <option>-q</option> +specifies a query operation; <option>-a</option> means that you want +to show the “available” (i.e., installable) packages, as opposed to +the installed packages; and <option>-f</option> +<filename>nixpkgs-<replaceable>version</replaceable></filename> +specifies the source of the packages. The argument +<literal>'*'</literal> shows all installable packages. (The quotes are +necessary to prevent shell expansion.) You can also select specific +packages by name: + +<screen> +$ nix-env -qaf nixpkgs-<replaceable>version</replaceable> gcc +gcc-3.4.6 +gcc-4.0.3 +gcc-4.1.1</screen> + +</para> <para>It is also possible to see the <emphasis>status</emphasis> of available components, i.e., whether they are installed into the user |