1.8 KiB
X.org
The Nix expressions for the X.org packages reside in
pkgs/servers/x11/xorg/default.nix. This file is automatically generated from
lists of tarballs in an X.org release. As such it should not be modified
directly; rather, you should modify the lists, the generator script or the
file pkgs/servers/x11/xorg/overrides.nix, in which you can override or add
to the derivations produced by the generator.
The generator is invoked as follows:
cd pkgs/servers/x11/xorg
cat tarballs-7.4.list extra.list old.list | perl ./generate-expr-from-tarballs.pl
For each of the tarballs in the .list files, the script downloads it,
unpacks it, and searches its configure.ac and *.pc.in files for
dependencies. This information is used to generate default.nix. The
generator caches downloaded tarballs between runs. Pay close attention to the
NOT FOUND: $NAME messages at the end of the run, since they may indicate
missing dependencies. (Some might be optional dependencies, however.)
A file like tarballs-7.4.list contains all tarballs in a X.org release. It
can be generated like this:
export i="mirror://xorg/X11R7.4/src/everything/"
cat $(PRINT_PATH=1 nix-prefetch-url $i | tail -n 1) \
| perl -e 'while (<>) { if (/(href|HREF)="([^"]*.bz2)"/) { print "$ENV{'i'}$2\n"; }; }' \
| sort > tarballs-7.4.list
extra.list contains libraries that aren’t part of X.org proper, but are
closely related to it, such as libxcb. old.list contains some packages
that were removed from X.org, but are still needed by some people or by other
packages (such as imake).
If the expression for a package requires derivation attributes that the
generator cannot figure out automatically (say, patches or a postInstall
hook), you should modify pkgs/servers/x11/xorg/overrides.nix.