diff --git a/pkgs/development/libraries/kerberos/krb5.nix b/pkgs/development/libraries/kerberos/krb5.nix
index afb928aff6e..165f9139ff1 100644
--- a/pkgs/development/libraries/kerberos/krb5.nix
+++ b/pkgs/development/libraries/kerberos/krb5.nix
@@ -75,7 +75,7 @@ stdenv.mkDerivation rec {
     description = "MIT Kerberos 5";
     homepage = http://web.mit.edu/kerberos/;
     license = licenses.mit;
-    platforms = platforms.unix;
+    platforms = platforms.unix ++ platforms.windows;
     maintainers = with maintainers; [ wkennington ];
   };
 
diff --git a/pkgs/tools/misc/coreutils/default.nix b/pkgs/tools/misc/coreutils/default.nix
index de97e94ae42..c465907fde8 100644
--- a/pkgs/tools/misc/coreutils/default.nix
+++ b/pkgs/tools/misc/coreutils/default.nix
@@ -109,7 +109,7 @@ stdenv.mkDerivation rec {
 
     license = licenses.gpl3Plus;
 
-    platforms = platforms.unix;
+    platforms = platforms.unix ++ platforms.windows;
 
     maintainers = [ maintainers.eelco ];
   };
diff --git a/pkgs/tools/misc/direnv/default.nix b/pkgs/tools/misc/direnv/default.nix
index e096024e537..089ed6ce516 100644
--- a/pkgs/tools/misc/direnv/default.nix
+++ b/pkgs/tools/misc/direnv/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, buildGoPackage, bash}:
+{ stdenv, fetchFromGitHub, buildGoPackage, bash, fetchpatch }:
 
 buildGoPackage rec {
   name = "direnv-${version}";
@@ -16,9 +16,10 @@ buildGoPackage rec {
     cd $NIX_BUILD_TOP/go/src/$goPackagePath
   '';
 
-  buildPhase = ''
-    make BASH_PATH=${bash}/bin/bash
-  '';
+  # we have no bash at the moment for windows
+  makeFlags = stdenv.lib.optional (!stdenv.hostPlatform.isWindows) [
+    "BASH_PATH=${bash}/bin/bash"
+  ];
 
   installPhase = ''
     mkdir -p $out
diff --git a/pkgs/tools/networking/openssh/default.nix b/pkgs/tools/networking/openssh/default.nix
index 7aeae3ca9d1..7b3c0089466 100644
--- a/pkgs/tools/networking/openssh/default.nix
+++ b/pkgs/tools/networking/openssh/default.nix
@@ -98,7 +98,7 @@ stdenv.mkDerivation rec {
     homepage = http://www.openssh.com/;
     description = "An implementation of the SSH protocol";
     license = stdenv.lib.licenses.bsd2;
-    platforms = platforms.unix;
+    platforms = platforms.unix ++ platforms.windows;
     maintainers = with maintainers; [ eelco aneeshusa ];
   };
 }
diff --git a/pkgs/tools/text/gawk/default.nix b/pkgs/tools/text/gawk/default.nix
index 15d54f4a2a4..33ce5a0fdb8 100644
--- a/pkgs/tools/text/gawk/default.nix
+++ b/pkgs/tools/text/gawk/default.nix
@@ -74,7 +74,7 @@ stdenv.mkDerivation rec {
 
     license = licenses.gpl3Plus;
 
-    platforms = platforms.unix;
+    platforms = platforms.unix ++ platforms.windows;
 
     maintainers = [ ];
   };
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 012531799c3..569494d39b6 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -8934,7 +8934,7 @@ let
     meta = with stdenv.lib; {
       description = "The World-Wide Web library for Perl";
       license = with licenses; [ artistic1 gpl1Plus ];
-      platforms = platforms.unix;
+      platforms = platforms.unix ++ platforms.windows;
     };
     buildInputs = [ TestFatal TestNeeds TestRequiresInternet ];
   };