Commit fafebf71 authored by Robert Schütz's avatar Robert Schütz
Browse files

lib.concatAttrValues: init 

This is useful for adding all optional-dependencies to the
nativeCheckInputs of Python packages.
parent 8052e273

lib/default.nix

+1 −0
Original line number Diff line number Diff line
@@ -303,6 +303,7 @@ let 
        elem

        elemAt

        isList

        concatAttrValues

        ;

      inherit (self.strings)

        concatStrings

lib/lists.nix

+23 −1
Original line number Diff line number Diff line
@@ -10,7 +10,7 @@ let 
    id

    warn

    ;

  inherit (lib.attrsets) mapAttrs attrNames;

  inherit (lib.attrsets) mapAttrs attrNames attrValues;

  inherit (lib) max;

in

rec {
@@ -1997,4 +1997,26 @@ rec { 
  */

  mutuallyExclusive = a: b: length a == 0 || !(any (x: elem x a) b);



  /**

    Concatenate all attributes of an attribute set.

    This assumes that every attribute of the set is a list.



    # Inputs



    `set`



    : Attribute set with attributes that are lists



    # Examples

    :::{.example}

    ## `lib.concatAttrValues` usage example



    ```nix

    concatAttrValues { a = [ 1 2 ]; b = [ 3 ]; }

    => [ 1 2 3 ]

    ```



    :::

  */

  concatAttrValues = set: concatLists (attrValues set);

}