6 files changed, 8 insertions, 8 deletions
diff --git a/pkgs/development/interpreters/guile/2.0.nix b/pkgs/development/interpreters/guile/2.0.nix
index 24266d5967650..af71d5cc80d7b 100644
--- a/pkgs/development/interpreters/guile/2.0.nix
+++ b/pkgs/development/interpreters/guile/2.0.nix
@@ -122,6 +122,6 @@
 
 (stdenv.lib.optionalAttrs (!stdenv.isLinux) {
   # Work around <https://bugs.gnu.org/14201>.
-  SHELL = "${stdenv.shell}";
-  CONFIG_SHELL = "${stdenv.shell}";
+  SHELL = stdenv.shell;
+  CONFIG_SHELL = stdenv.shell;
 })
diff --git a/pkgs/development/interpreters/love/0.10.nix b/pkgs/development/interpreters/love/0.10.nix
index bba54c83f5c5f..7e90c6dfb2872 100644
--- a/pkgs/development/interpreters/love/0.10.nix
+++ b/pkgs/development/interpreters/love/0.10.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   src = fetchFromBitbucket {
     owner = "rude";
     repo = "love";
-    rev = "${version}";
+    rev = version;
     sha256 = "19yfmlcx6w8yi4ndm5lni8lrsvnn77bxw5py0dc293nzzlaqa9ym";
   };
 
diff --git a/pkgs/development/interpreters/love/11.1.nix b/pkgs/development/interpreters/love/11.1.nix
index 1c64c417cb0ca..478b147d1f3da 100644
--- a/pkgs/development/interpreters/love/11.1.nix
+++ b/pkgs/development/interpreters/love/11.1.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   src = fetchFromBitbucket {
     owner = "rude";
     repo = "love";
-    rev = "${version}";
+    rev = version;
     sha256 = "0q1lsgc1621czrg49nmabq6am9sgxa9syxrwzlksqqr4dyzw4nmf";
   };
 
diff --git a/pkgs/development/interpreters/pixie/default.nix b/pkgs/development/interpreters/pixie/default.nix
index 99c763615e3d7..02f6d34a0305d 100644
--- a/pkgs/development/interpreters/pixie/default.nix
+++ b/pkgs/development/interpreters/pixie/default.nix
@@ -36,7 +36,7 @@ let
     buildInputs = libs;
     PYTHON = if buildWithPypy
       then "${pypy}/pypy-c/pypy-c"
-      else "${python2.interpreter}";
+      else python2.interpreter;
     unpackPhase = ''
       cp -R ${pixie-src} pixie-src
       mkdir pypy-src
diff --git a/pkgs/development/interpreters/python/cpython/default.nix b/pkgs/development/interpreters/python/cpython/default.nix
index 1de1c401c37c8..32aa355d3aa2d 100644
--- a/pkgs/development/interpreters/python/cpython/default.nix
+++ b/pkgs/development/interpreters/python/cpython/default.nix
@@ -129,8 +129,8 @@ in with passthru; stdenv.mkDerivation {
     substituteInPlace "Lib/tkinter/tix.py" --replace "os.environ.get('TIX_LIBRARY')" "os.environ.get('TIX_LIBRARY') or '${tix}/lib'"
   '';
 
-  CPPFLAGS = "${concatStringsSep " " (map (p: "-I${getDev p}/include") buildInputs)}";
-  LDFLAGS = "${concatStringsSep " " (map (p: "-L${getLib p}/lib") buildInputs)}";
+  CPPFLAGS = concatStringsSep " " (map (p: "-I${getDev p}/include") buildInputs);
+  LDFLAGS = concatStringsSep " " (map (p: "-L${getLib p}/lib") buildInputs);
   LIBS = "${optionalString (!stdenv.isDarwin) "-lcrypt"} ${optionalString (ncurses != null) "-lncurses"}";
   NIX_LDFLAGS = optionalString stdenv.isLinux "-lgcc_s";
   # Determinism: We fix the hashes of str, bytes and datetime objects.
diff --git a/pkgs/development/interpreters/renpy/default.nix b/pkgs/development/interpreters/renpy/default.nix
index db68578d62a60..30ac6d2bd5b45 100644
--- a/pkgs/development/interpreters/renpy/default.nix
+++ b/pkgs/development/interpreters/renpy/default.nix
@@ -37,7 +37,7 @@ stdenv.mkDerivation rec {
 
   pythonPath = [ pygame_sdl2 tkinter ];
 
-  RENPY_DEPS_INSTALL = stdenv.lib.concatStringsSep "::" (map (path: "${path}") [
+  RENPY_DEPS_INSTALL = stdenv.lib.concatStringsSep "::" (map (path: path) [
     SDL2 SDL2.dev libpng ffmpeg ffmpeg.out freetype glew.dev glew.out libGLU_combined fribidi zlib
   ]);