stockholm/lib/default.nix
2016-10-20 20:21:59 +02:00

46 lines
1.2 KiB
Nix

let
nixpkgs-lib = import <nixpkgs/lib>;
lib = with lib; nixpkgs-lib // builtins // {
git = import ./git.nix { inherit lib; };
shell = import ./shell.nix { inherit lib; };
types = nixpkgs-lib.types // import ./types.nix { inherit lib; };
eq = x: y: x == y;
ne = x: y: x != y;
mod = x: y: x - y * (x / y);
genid = import ./genid.nix { inherit lib; };
genid_signed = x: ((lib.genid x) + 16777216) / 2;
lpad = n: c: s:
if lib.stringLength s < n
then lib.lpad n c (c + s)
else s;
subdirsOf = path:
lib.mapAttrs (name: _: path + "/${name}")
(filterAttrs (_: eq "directory") (readDir path));
genAttrs' = names: f: listToAttrs (map f names);
getAttrs = names: set:
listToAttrs (map (name: nameValuePair name set.${name})
(filter (flip hasAttr set) names));
setAttr = name: value: set: set // { ${name} = value; };
toC = x: let
type = typeOf x;
reject = throw "cannot convert ${type}";
in {
list = "{ ${concatStringsSep ", " (map toC x)} }";
null = "NULL";
set = if isDerivation x then toJSON x else reject;
string = toJSON x; # close enough
}.${type} or reject;
};
in
lib