6 files changed, 18 insertions, 18 deletions
diff --git a/pkgs/development/compilers/llvm/7/clang/default.nix b/pkgs/development/compilers/llvm/7/clang/default.nix
index 5ac9a7a2672a..cc5dcfc160bc 100644
--- a/pkgs/development/compilers/llvm/7/clang/default.nix
+++ b/pkgs/development/compilers/llvm/7/clang/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetch, cmake, libxml2, llvm, version, clang-tools-extra_src, python
+{ stdenv, fetch, cmake, libxml2, llvm, version, clang-tools-extra_src, python3
 , fixDarwinDylibNames
 , enableManpages ? false
 , enablePolly ? false # TODO: get this info from llvm (passthru?)
@@ -19,8 +19,8 @@ let
       mv clang-tools-extra-* $sourceRoot/tools/extra
     '';
 
-    nativeBuildInputs = [ cmake python ]
-      ++ stdenv.lib.optional enableManpages python.pkgs.sphinx;
+    nativeBuildInputs = [ cmake python3 ]
+      ++ stdenv.lib.optional enableManpages python3.pkgs.sphinx;
 
     buildInputs = [ libxml2 llvm ]
       ++ stdenv.lib.optional stdenv.isDarwin fixDarwinDylibNames;
diff --git a/pkgs/development/compilers/llvm/7/compiler-rt.nix b/pkgs/development/compilers/llvm/7/compiler-rt.nix
index a7d4bcb86962..ae98940adeab 100644
--- a/pkgs/development/compilers/llvm/7/compiler-rt.nix
+++ b/pkgs/development/compilers/llvm/7/compiler-rt.nix
@@ -1,10 +1,10 @@
-{ stdenv, version, fetch, cmake, python, llvm, libcxxabi }:
+{ stdenv, version, fetch, cmake, python3, llvm, libcxxabi }:
 stdenv.mkDerivation {
   pname = "compiler-rt";
   inherit version;
   src = fetch "compiler-rt" "1n48p8gjarihkws0i2bay5w9bdwyxyxxbpwyng7ba58jb30dlyq5";
 
-  nativeBuildInputs = [ cmake python llvm ];
+  nativeBuildInputs = [ cmake python3 llvm ];
   buildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
 
   NIX_CFLAGS_COMPILE = [
diff --git a/pkgs/development/compilers/llvm/7/default.nix b/pkgs/development/compilers/llvm/7/default.nix
index 621a246225d7..f5dbea58a7db 100644
--- a/pkgs/development/compilers/llvm/7/default.nix
+++ b/pkgs/development/compilers/llvm/7/default.nix
@@ -1,5 +1,5 @@
 { lowPrio, newScope, pkgs, stdenv, cmake, libstdcxxHook
-, libxml2, python, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
+, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
 }:
@@ -16,7 +16,7 @@ let
   clang-tools-extra_src = fetch "clang-tools-extra" "0lb4kdh7j2fhfz8kd6iv5df7m3pikiryk1vvwsf87spc90n09q0w";
 
   tools = stdenv.lib.makeExtensible (tools: let
-    callPackage = newScope (tools // { inherit stdenv cmake libxml2 python isl release_version version fetch; });
+    callPackage = newScope (tools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch; });
     mkExtraBuildCommands = cc: ''
       rsrc="$out/resource-root"
       mkdir "$rsrc"
@@ -42,12 +42,12 @@ let
 
     llvm-manpages = lowPrio (tools.llvm.override {
       enableManpages = true;
-      python = pkgs.python;  # don't use python-boot
+      python3 = pkgs.python3;  # don't use python-boot
     });
 
     clang-manpages = lowPrio (tools.clang-unwrapped.override {
       enableManpages = true;
-      python = pkgs.python;  # don't use python-boot
+      python3 = pkgs.python3;  # don't use python-boot
     });
 
     libclang = tools.clang-unwrapped.lib;
@@ -126,7 +126,7 @@ let
   });
 
   libraries = stdenv.lib.makeExtensible (libraries: let
-    callPackage = newScope (libraries // buildLlvmTools // { inherit stdenv cmake libxml2 python isl release_version version fetch; });
+    callPackage = newScope (libraries // buildLlvmTools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch; });
   in {
 
     compiler-rt = callPackage ./compiler-rt.nix {
diff --git a/pkgs/development/compilers/llvm/7/libc++/default.nix b/pkgs/development/compilers/llvm/7/libc++/default.nix
index f6f9970d7a6e..f2cdd2f6f5fa 100644
--- a/pkgs/development/compilers/llvm/7/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/7/libc++/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetch, cmake, python, libcxxabi, fixDarwinDylibNames, version
+{ lib, stdenv, fetch, cmake, python3, libcxxabi, fixDarwinDylibNames, version
 , enableShared ? ! stdenv.hostPlatform.isMusl }:
 
 stdenv.mkDerivation {
@@ -24,7 +24,7 @@ stdenv.mkDerivation {
   '' + lib.optionalString stdenv.hostPlatform.isMusl ''
     patchShebangs utils/cat_files.py
   '';
-  nativeBuildInputs = [ cmake ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl python;
+  nativeBuildInputs = [ cmake ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl python3;
 
   buildInputs = [ libcxxabi ] ++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
 
diff --git a/pkgs/development/compilers/llvm/7/lldb.nix b/pkgs/development/compilers/llvm/7/lldb.nix
index 44687ead4d1c..ace6ae812fde 100644
--- a/pkgs/development/compilers/llvm/7/lldb.nix
+++ b/pkgs/development/compilers/llvm/7/lldb.nix
@@ -10,7 +10,7 @@
 , llvm
 , clang-unwrapped
 , perl
-, python
+, python3
 , version
 , darwin
 }:
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
 
   src = fetch "lldb" "0klsscg1sczc4nw2l53xggi969k361cng2sjjrfp3bv4g5x14s4v";
 
-  nativeBuildInputs = [ cmake perl python which swig ];
+  nativeBuildInputs = [ cmake perl python3 which swig ];
   buildInputs = [ ncurses zlib libedit libxml2 llvm ]
     ++ stdenv.lib.optionals stdenv.isDarwin [ darwin.libobjc darwin.apple_sdk.libs.xpc darwin.apple_sdk.frameworks.Foundation darwin.bootstrap_cmds darwin.apple_sdk.frameworks.Carbon darwin.apple_sdk.frameworks.Cocoa ];
 
diff --git a/pkgs/development/compilers/llvm/7/llvm.nix b/pkgs/development/compilers/llvm/7/llvm.nix
index c56bbfd0eab9..d7fb1fe4b93f 100644
--- a/pkgs/development/compilers/llvm/7/llvm.nix
+++ b/pkgs/development/compilers/llvm/7/llvm.nix
@@ -2,7 +2,7 @@
 , fetch
 , fetchpatch
 , cmake
-, python
+, python3
 , libffi
 , libbfd
 , libpfm
@@ -48,8 +48,8 @@ in stdenv.mkDerivation ({
   outputs = [ "out" "python" ]
     ++ optional enableSharedLibraries "lib";
 
-  nativeBuildInputs = [ cmake python ]
-    ++ optional enableManpages python.pkgs.sphinx;
+  nativeBuildInputs = [ cmake python3 ]
+    ++ optional enableManpages python3.pkgs.sphinx;
 
   buildInputs = [ libxml2 libffi ]
     ++ optional enablePFM libpfm; # exegesis
@@ -141,7 +141,7 @@ in stdenv.mkDerivation ({
   '';
 
   preCheck = ''
-    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PWD/lib
+    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}$PWD/lib
   '';
 
   postInstall = ''