mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-26 15:44:20 +00:00
cee35739ff
mergeInputs is now simply defined in terms of `concatLists` and
`catAttrs` instead of a more complicated `foldr`.
Note that the order of PATH has also changed. For example running the
following with nix-shell:
let
pkgs = import <nixpkgs> {};
shell1 = pkgs.mkShell {
buildInputs = [ pkgs.htop ];
};
shell2 = pkgs.mkShell {
buildInputs = [ pkgs.hello ];
};
shell3 = pkgs.mkShell {
inputsFrom = [ shell1 shell2 ];
buildInputs = [ pkgs.tree ];
};
in shell3
Results in the following PATH:
$ echo $PATH
...
/nix/store/yifq4bikf7m07160bpia7z48ciqddbfi-tree-1.8.0/bin:
/nix/store/vhxqk81234ivqw1a7j200a1c69k8mywi-htop-2.2.0/bin:
/nix/store/n9vm3m58y1n3rg3mlll17wanc9hln58k-hello-2.10/bin
...
Previously the order was:
/nix/store/n9vm3m58y1n3rg3mlll17wanc9hln58k-hello-2.10/bin
/nix/store/vhxqk81234ivqw1a7j200a1c69k8mywi-htop-2.2.0/bin:
/nix/store/yifq4bikf7m07160bpia7z48ciqddbfi-tree-1.8.0/bin:
I think the new order makes more sense because it allows to override
the PATH in the outermost mkShell.
46 lines
1.1 KiB
Nix
46 lines
1.1 KiB
Nix
{ lib, stdenv }:
|
|
|
|
# A special kind of derivation that is only meant to be consumed by the
|
|
# nix-shell.
|
|
{
|
|
inputsFrom ? [], # a list of derivations whose inputs will be made available to the environment
|
|
buildInputs ? [],
|
|
nativeBuildInputs ? [],
|
|
propagatedBuildInputs ? [],
|
|
propagatedNativeBuildInputs ? [],
|
|
...
|
|
}@attrs:
|
|
let
|
|
mergeInputs = name: lib.concatLists (lib.catAttrs name
|
|
([attrs] ++ inputsFrom));
|
|
|
|
rest = builtins.removeAttrs attrs [
|
|
"inputsFrom"
|
|
"buildInputs"
|
|
"nativeBuildInputs"
|
|
"propagatedBuildInputs"
|
|
"propagatedNativeBuildInputs"
|
|
"shellHook"
|
|
];
|
|
in
|
|
|
|
stdenv.mkDerivation ({
|
|
name = "nix-shell";
|
|
phases = ["nobuildPhase"];
|
|
|
|
buildInputs = mergeInputs "buildInputs";
|
|
nativeBuildInputs = mergeInputs "nativeBuildInputs";
|
|
propagatedBuildInputs = mergeInputs "propagatedBuildInputs";
|
|
propagatedNativeBuildInputs = mergeInputs "propagatedNativeBuildInputs";
|
|
|
|
shellHook = lib.concatStringsSep "\n" (lib.catAttrs "shellHook"
|
|
(lib.reverseList inputsFrom ++ [attrs]));
|
|
|
|
nobuildPhase = ''
|
|
echo
|
|
echo "This derivation is not meant to be built, aborting";
|
|
echo
|
|
exit 1
|
|
'';
|
|
} // rest)
|