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Diffstat (limited to 'nixos/doc/manual/development/sources.xml')
| -rw-r--r-- | nixos/doc/manual/development/sources.xml | 113 |
1 files changed, 48 insertions, 65 deletions
diff --git a/nixos/doc/manual/development/sources.xml b/nixos/doc/manual/development/sources.xml index a2896cd7a135..c7b64cb84beb 100644 --- a/nixos/doc/manual/development/sources.xml +++ b/nixos/doc/manual/development/sources.xml @@ -3,101 +3,84 @@ xmlns:xi="http://www.w3.org/2001/XInclude" version="5.0" xml:id="sec-getting-sources"> - -<title>Getting the Sources</title> - -<para>By default, NixOS’s <command>nixos-rebuild</command> command -uses the NixOS and Nixpkgs sources provided by the -<literal>nixos</literal> channel (kept in -<filename>/nix/var/nix/profiles/per-user/root/channels/nixos</filename>). -To modify NixOS, however, you should check out the latest sources from -Git. This is as follows: - + <title>Getting the Sources</title> + <para> + By default, NixOS’s <command>nixos-rebuild</command> command uses the NixOS + and Nixpkgs sources provided by the <literal>nixos</literal> channel (kept in + <filename>/nix/var/nix/profiles/per-user/root/channels/nixos</filename>). To + modify NixOS, however, you should check out the latest sources from Git. This + is as follows: <screen> $ git clone git://github.com/NixOS/nixpkgs.git $ cd nixpkgs $ git remote add channels git://github.com/NixOS/nixpkgs-channels.git $ git remote update channels </screen> - -This will check out the latest Nixpkgs sources to -<filename>./nixpkgs</filename> the NixOS sources to -<filename>./nixpkgs/nixos</filename>. (The NixOS source tree lives in -a subdirectory of the Nixpkgs repository.) The remote -<literal>channels</literal> refers to a read-only repository that -tracks the Nixpkgs/NixOS channels (see <xref linkend="sec-upgrading"/> -for more information about channels). Thus, the Git branch -<literal>channels/nixos-17.03</literal> will contain the latest built -and tested version available in the <literal>nixos-17.03</literal> -channel.</para> - -<para>It’s often inconvenient to develop directly on the master -branch, since if somebody has just committed (say) a change to GCC, -then the binary cache may not have caught up yet and you’ll have to -rebuild everything from source. So you may want to create a local -branch based on your current NixOS version: - + This will check out the latest Nixpkgs sources to + <filename>./nixpkgs</filename> the NixOS sources to + <filename>./nixpkgs/nixos</filename>. (The NixOS source tree lives in a + subdirectory of the Nixpkgs repository.) The remote + <literal>channels</literal> refers to a read-only repository that tracks the + Nixpkgs/NixOS channels (see <xref linkend="sec-upgrading"/> for more + information about channels). Thus, the Git branch + <literal>channels/nixos-17.03</literal> will contain the latest built and + tested version available in the <literal>nixos-17.03</literal> channel. + </para> + <para> + It’s often inconvenient to develop directly on the master branch, since if + somebody has just committed (say) a change to GCC, then the binary cache may + not have caught up yet and you’ll have to rebuild everything from source. + So you may want to create a local branch based on your current NixOS version: <screen> $ nixos-version 17.09pre104379.6e0b727 (Hummingbird) $ git checkout -b local 6e0b727 </screen> - -Or, to base your local branch on the latest version available in a -NixOS channel: - + Or, to base your local branch on the latest version available in a NixOS + channel: <screen> $ git remote update channels $ git checkout -b local channels/nixos-17.03 </screen> - -(Replace <literal>nixos-17.03</literal> with the name of the channel -you want to use.) You can use <command>git merge</command> or -<command>git rebase</command> to keep your local branch in sync with -the channel, e.g. - + (Replace <literal>nixos-17.03</literal> with the name of the channel you want + to use.) You can use <command>git merge</command> or <command>git + rebase</command> to keep your local branch in sync with the channel, e.g. <screen> $ git remote update channels $ git merge channels/nixos-17.03 </screen> - -You can use <command>git cherry-pick</command> to copy commits from -your local branch to the upstream branch.</para> - -<para>If you want to rebuild your system using your (modified) -sources, you need to tell <command>nixos-rebuild</command> about them -using the <option>-I</option> flag: - + You can use <command>git cherry-pick</command> to copy commits from your + local branch to the upstream branch. + </para> + <para> + If you want to rebuild your system using your (modified) sources, you need to + tell <command>nixos-rebuild</command> about them using the + <option>-I</option> flag: <screen> # nixos-rebuild switch -I nixpkgs=<replaceable>/my/sources</replaceable>/nixpkgs </screen> - -</para> - -<para>If you want <command>nix-env</command> to use the expressions in -<replaceable>/my/sources</replaceable>, use <command>nix-env -f -<replaceable>/my/sources</replaceable>/nixpkgs</command>, or change -the default by adding a symlink in -<filename>~/.nix-defexpr</filename>: - + </para> + <para> + If you want <command>nix-env</command> to use the expressions in + <replaceable>/my/sources</replaceable>, use <command>nix-env -f + <replaceable>/my/sources</replaceable>/nixpkgs</command>, or change the + default by adding a symlink in <filename>~/.nix-defexpr</filename>: <screen> $ ln -s <replaceable>/my/sources</replaceable>/nixpkgs ~/.nix-defexpr/nixpkgs </screen> - -You may want to delete the symlink -<filename>~/.nix-defexpr/channels_root</filename> to prevent root’s -NixOS channel from clashing with your own tree (this may break the -command-not-found utility though). If you want to go back to the default -state, you may just remove the <filename>~/.nix-defexpr</filename> -directory completely, log out and log in again and it should have been -recreated with a link to the root channels.</para> - + You may want to delete the symlink + <filename>~/.nix-defexpr/channels_root</filename> to prevent root’s NixOS + channel from clashing with your own tree (this may break the + command-not-found utility though). If you want to go back to the default + state, you may just remove the <filename>~/.nix-defexpr</filename> directory + completely, log out and log in again and it should have been recreated with a + link to the root channels. + </para> <!-- FIXME: not sure what this means. <para>You should not pass the base directory <filename><replaceable>/my/sources</replaceable></filename> to <command>nix-env</command>, as it will break after interpreting expressions in <filename>nixos/</filename> as packages.</para> --> - </chapter> |