9279174dde
in attribute set pattern matches. This allows defining a function
that takes *at least* the listed attributes, while ignoring
additional attributes. For instance,
{stdenv, fetchurl, fuse, ...}:
stdenv.mkDerivation {
...
};
defines a function that requires an attribute set that contains the
specified attributes but ignores others. The main advantage is that
we can then write in all-packages.nix
aefs = import ../bla/aefs pkgs;
instead of
aefs = import ../bla/aefs {
inherit stdenv fetchurl fuse;
};
This saves a lot of typing (not to mention not having to update
all-packages.nix with purely mechanical changes). It saves as much
typing as the "args: with args;" style, but has the advantage that
the function arguments are properly declared (not implicit in what
the body of the "with" uses).
|
||
|---|---|---|
| .. | ||
| bin2c | ||
| boost | ||
| bsdiff-4.3 | ||
| libexpr | ||
| libmain | ||
| libstore | ||
| libutil | ||
| nix-env | ||
| nix-hash | ||
| nix-instantiate | ||
| nix-log2xml | ||
| nix-setuid-helper | ||
| nix-store | ||
| nix-worker | ||
| aterm-helper.pl | ||
| Makefile.am | ||