diff --git a/pkgs/development/compilers/dtc/default.nix b/pkgs/development/compilers/dtc/default.nix
index 59c85d03d4b..6daf7a6115a 100644
--- a/pkgs/development/compilers/dtc/default.nix
+++ b/pkgs/development/compilers/dtc/default.nix
@@ -19,6 +19,6 @@ stdenv.mkDerivation rec {
     homepage = https://git.kernel.org/cgit/utils/dtc/dtc.git;
     license = licenses.gpl2; # dtc itself is GPLv2, libfdt is dual GPL/BSD
     maintainers = [ maintainers.dezgeg ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }
diff --git a/pkgs/development/libraries/acl/default.nix b/pkgs/development/libraries/acl/default.nix
index d37d8926fbd..f6445874913 100644
--- a/pkgs/development/libraries/acl/default.nix
+++ b/pkgs/development/libraries/acl/default.nix
@@ -25,5 +25,6 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://savannah.nongnu.org/projects/acl;
     description = "Library and tools for manipulating access control lists";
+    platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/development/libraries/attr/default.nix b/pkgs/development/libraries/attr/default.nix
index 8d87e2ee50d..3c69a7328b2 100644
--- a/pkgs/development/libraries/attr/default.nix
+++ b/pkgs/development/libraries/attr/default.nix
@@ -17,5 +17,6 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://savannah.nongnu.org/projects/attr/;
     description = "Library and tools for manipulating extended attributes";
+    platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/tools/X11/ckbcomp/default.nix b/pkgs/tools/X11/ckbcomp/default.nix
index 474486b6d6c..87161a6442a 100644
--- a/pkgs/tools/X11/ckbcomp/default.nix
+++ b/pkgs/tools/X11/ckbcomp/default.nix
@@ -31,6 +31,6 @@ stdenv.mkDerivation rec {
     homepage = http://anonscm.debian.org/cgit/d-i/console-setup.git;
     license = licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [ dezgeg ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }