terra: fix LuaJIT fetch per @jnetod in #125896

pkgs/development/compilers/terra/default.nix

@@ -1,12 +1,15 @@
-{ lib, stdenv, fetchurl, fetchFromGitHub, llvmPackages, ncurses, cmake, libxml2
+{ lib, stdenv, fetchFromGitHub, llvmPackages, ncurses, cmake, libxml2
 , symlinkJoin, breakpointHook, cudaPackages, enableCUDA ? false }:
 
 let
   luajitRev = "9143e86498436892cb4316550be4d45b68a61224";
-  luajitArchive = "LuaJIT-${luajitRev}.tar.gz";
-  luajitSrc = fetchurl {
-    url = "https://github.com/LuaJIT/LuaJIT/archive/${luajitRev}.tar.gz";
-    sha256 = "0kasmyk40ic4b9dwd4wixm0qk10l88ardrfimwmq36yc5dhnizmy";
+  luajitBase = "LuaJIT-${luajitRev}";
+  luajitArchive = "${luajitBase}.tar.gz";
+  luajitSrc = fetchFromGitHub {
+    owner = "LuaJIT";
+    repo = "LuaJIT";
+    rev = luajitRev;
+    sha256 = "1zw1yr0375d6jr5x20zvkvk76hkaqamjynbswpl604w6r6id070b";
   };
 
   llvmMerged = symlinkJoin {
@@ -27,7 +30,7 @@ let
 
 in stdenv.mkDerivation rec {
   pname = "terra";
-  version = "1.0.0-beta3";
+  version = "1.0.0-beta3_${builtins.substring 0 7 src.rev}";
 
   src = fetchFromGitHub {
     owner = "terralang";
@@ -41,7 +44,7 @@ in stdenv.mkDerivation rec {
 
   cmakeFlags = [
     "-DHAS_TERRA_VERSION=0"
-    "-DTERRA_VERSION=release-1.0.0-beta3"
+    "-DTERRA_VERSION=${version}"
     "-DTERRA_LUA=luajit"
     "-DCLANG_RESOURCE_DIR=${llvmMerged}/lib/clang/${clangVersion}"
   ] ++ lib.optional enableCUDA "-DTERRA_ENABLE_CUDA=ON";
@@ -51,16 +54,21 @@ in stdenv.mkDerivation rec {
   hardeningDisable = [ "fortify" ];
   outputs = [ "bin" "dev" "out" "static" ];
 
-  patches = [ ./nix-cflags.patch ./disable-luajit-file-download.patch ];
+  patches = [ ./nix-cflags.patch ];
 
   postPatch = ''
+    sed -i '/file(DOWNLOAD "''${LUAJIT_URL}" "''${LUAJIT_TAR}")/d' \
+      cmake/Modules/GetLuaJIT.cmake
+
     substituteInPlace src/terralib.lua \
       --subst-var-by NIX_LIBC_INCLUDE ${lib.getDev stdenv.cc.libc}/include
   '';
 
   preConfigure = ''
     mkdir -p build
-    cp ${luajitSrc} build/${luajitArchive}
+    ln -s ${luajitSrc} build/${luajitBase}
+    tar --mode="a+rwX" -chzf build/${luajitArchive} -C build ${luajitBase}
+    rm build/${luajitBase}
   '';
 
   installPhase = ''

pkgs/development/compilers/terra/disable-luajit-file-download.patch

@@ -1,13 +0,0 @@
-diff --git a/cmake/Modules/GetLuaJIT.cmake b/cmake/Modules/GetLuaJIT.cmake
-index 023b5c2..8564b92 100644
---- a/cmake/Modules/GetLuaJIT.cmake
-+++ b/cmake/Modules/GetLuaJIT.cmake
-@@ -63,8 +63,6 @@ string(CONCAT
-   "${CMAKE_SHARED_LIBRARY_SUFFIX}"
- )
- 
--file(DOWNLOAD "${LUAJIT_URL}" "${LUAJIT_TAR}")
--
- execute_process(
-   COMMAND "${CMAKE_COMMAND}" -E tar xzf "${LUAJIT_TAR}"
-   WORKING_DIRECTORY ${PROJECT_BINARY_DIR}