treewide: mark packages as buildable on darwin (PR #45364)

vcunat amended the commit a bit; see the PR for details/discussion.

pkgs/development/libraries/science/math/brial/default.nix

@@ -41,6 +41,6 @@ stdenv.mkDerivation rec {
     description = "Legacy version of PolyBoRi maintained by sagemath developers";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ timokau ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }

pkgs/development/libraries/science/math/cliquer/default.nix

@@ -33,6 +33,6 @@ stdenv.mkDerivation rec {
     '';
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ timokau ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }

pkgs/development/libraries/science/math/m4ri/default.nix

@@ -25,6 +25,6 @@ stdenv.mkDerivation rec {
     description = "Library to do fast arithmetic with dense matrices over F_2";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ timokau ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }

pkgs/development/libraries/science/math/m4rie/default.nix

@@ -34,6 +34,6 @@ stdenv.mkDerivation rec {
     '';
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ timokau ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }

pkgs/development/libraries/science/math/rankwidth/default.nix

@@ -22,6 +22,6 @@ stdenv.mkDerivation rec {
     description = "Calculates rank-width and rank-decompositions";
     license = with licenses; [ gpl2Plus ];
     maintainers = with maintainers; [ timokau ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }

pkgs/development/libraries/science/math/rubiks/default.nix

@@ -76,6 +76,6 @@ stdenv.mkDerivation rec {
       mit # Dik T. Winter's software
     ];
     maintainers = with maintainers; [ timokau ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }