llvm: Use pname

pkgs/development/compilers/llvm/4/llvm.nix

@@ -24,7 +24,7 @@ let
 in
 
 stdenv.mkDerivation ({
-  name = "llvm-${version}";
+  pname = "llvm";
   inherit version;
 
   src = fetch "llvm" "0l9bf7kdwhlj0kq1hawpyxhna1062z3h7qcz2y8nfl9dz2qksy6s";

pkgs/development/compilers/llvm/5/llvm.nix

@@ -23,7 +23,7 @@ let
 in
 
 stdenv.mkDerivation ({
-  name = "llvm-${version}";
+  pname = "llvm";
   inherit version;
 
   src = fetch "llvm" "0g1bbj2n6xv4p1n6hh17vj3vpvg56wacipc81dgwga9mg2lys8nm";

pkgs/development/compilers/llvm/6/llvm.nix

@@ -26,7 +26,7 @@ let
 in
 
 stdenv.mkDerivation ({
-  name = "llvm-${version}";
+  pname = "llvm";
   inherit version;
 
   src = fetch "llvm" "1qpls3vk85lydi5b4axl0809fv932qgsqgdgrk098567z4jc7mmn";

pkgs/development/compilers/llvm/7/llvm.nix

@@ -30,7 +30,7 @@ let
     imap (i: _: concatStringsSep "." (take i parts)) parts;
 
 in stdenv.mkDerivation ({
-  name = "llvm-${version}";
+  pname = "llvm";
   inherit version;
 
   src = fetch "llvm" "0r1p5didv4rkgxyvbkyz671xddg6i3dxvbpsi1xxipkla0l9pk0v";

pkgs/development/compilers/llvm/8/llvm.nix

@@ -28,7 +28,7 @@ let
     concatStringsSep "." (take 1 (splitString "." release_version));
 
 in stdenv.mkDerivation ({
-  name = "llvm-${version}";
+  pname = "llvm";
   inherit version;
 
   src = fetch "llvm" "1rvm5gqp5v8hfn17kqws3zhk94w4kxndal12bqa0y57p09nply24";