fix pkgsMusl.rustc

pkgs/build-support/rust/hooks/default.nix

@@ -75,11 +75,8 @@ in {
           ${lib.optionalString (stdenv.buildPlatform.config != stdenv.hostPlatform.config) ''
             [target."${shortTarget}"]
             "linker" = "${ccForHost}"
-            ${# https://github.com/rust-lang/rust/issues/46651#issuecomment-433611633
-            lib.optionalString (stdenv.hostPlatform.isMusl && stdenv.hostPlatform.isAarch64) ''
-              "rustflags" = [ "-C", "target-feature=+crt-static", "-C", "link-arg=-lgcc" ]
-            ''}
           ''}
+          "rustflags" = [ "-C", "target-feature=${if stdenv.hostPlatform.isStatic then "+" else "-"}crt-static" ]
         '';
       };
     } ./cargo-setup-hook.sh) {};

pkgs/development/compilers/rust/binary.nix

@@ -1,4 +1,5 @@
 { lib, stdenv, makeWrapper, bash, curl, darwin, zlib
+, autoPatchelfHook, gcc
 , version
 , src
 , platform
@@ -31,7 +32,9 @@ rec {
       license = [ licenses.mit licenses.asl20 ];
     };
 
+    nativeBuildInputs = lib.optional (!stdenv.isDarwin) autoPatchelfHook;
     buildInputs = [ bash ]
+      ++ lib.optionals (!stdenv.isDarwin) [ gcc.cc.lib zlib ]
       ++ lib.optional stdenv.isDarwin Security;
 
     postPatch = ''
@@ -42,24 +45,6 @@ rec {
       ./install.sh --prefix=$out \
         --components=${installComponents}
 
-      ${optionalString (stdenv.isLinux && bootstrapping) (''
-        patchelf \
-          --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
-          "$out/bin/rustc"
-        '' + optionalString (lib.versionAtLeast version "1.46")
-        # rustc bootstrap needs libz starting from 1.46
-        ''
-          ln -s ${zlib}/lib/libz.so.1 $out/lib/libz.so.1
-          ln -s ${zlib}/lib/libz.so $out/lib/libz.so
-        '' + ''
-        patchelf \
-          --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
-          "$out/bin/rustdoc"
-        patchelf \
-          --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
-          "$out/bin/cargo"
-      '')}
-
       # Do NOT, I repeat, DO NOT use `wrapProgram` on $out/bin/rustc
       # (or similar) here. It causes strange effects where rustc loads
       # the wrong libraries in a bootstrap-build causing failures that
@@ -83,8 +68,11 @@ rec {
       license = [ licenses.mit licenses.asl20 ];
     };
 
-    nativeBuildInputs = [ makeWrapper ];
-    buildInputs = [ bash ] ++ lib.optional stdenv.isDarwin Security;
+    nativeBuildInputs = [ makeWrapper ]
+      ++ lib.optional (!stdenv.isDarwin) autoPatchelfHook;
+    buildInputs = [ bash ]
+      ++ lib.optional (!stdenv.isDarwin) gcc.cc.lib
+      ++ lib.optional stdenv.isDarwin Security;
 
     postPatch = ''
       patchShebangs .
@@ -95,12 +83,6 @@ rec {
       ./install.sh --prefix=$out \
         --components=cargo
 
-      ${optionalString (stdenv.isLinux && bootstrapping) ''
-        patchelf \
-          --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) \
-          "$out/bin/cargo"
-      ''}
-
       wrapProgram "$out/bin/cargo" \
         --suffix PATH : "${rustc}/bin"
     '';

pkgs/development/compilers/rust/cargo.nix

@@ -72,5 +72,7 @@ rustPlatform.buildRustPackage {
     maintainers = with maintainers; [ retrry ];
     license = [ licenses.mit licenses.asl20 ];
     platforms = platforms.unix;
+    # weird segfault in a build script
+    broken = stdenv.targetPlatform.isMusl && !stdenv.targetPlatform.isStatic;
   };
 }

pkgs/development/compilers/rust/rustc.nix

@@ -87,6 +87,10 @@ in stdenv.mkDerivation rec {
     "${setBuild}.cxx=${cxxForBuild}"
     "${setHost}.cxx=${cxxForHost}"
     "${setTarget}.cxx=${cxxForTarget}"
+
+    "${setBuild}.crt-static=${lib.boolToString stdenv.buildPlatform.isStatic}"
+    "${setHost}.crt-static=${lib.boolToString stdenv.hostPlatform.isStatic}"
+    "${setTarget}.crt-static=${lib.boolToString stdenv.targetPlatform.isStatic}"
   ] ++ optionals (!withBundledLLVM) [
     "--enable-llvm-link-shared"
     "${setBuild}.llvm-config=${llvmSharedForBuild.dev}/bin/llvm-config"
@@ -188,8 +192,5 @@ in stdenv.mkDerivation rec {
     maintainers = with maintainers; [ madjar cstrahan globin havvy ];
     license = [ licenses.mit licenses.asl20 ];
     platforms = platforms.linux ++ platforms.darwin;
-    # rustc can't generate binaries for dynamically linked Musl.
-    # https://github.com/NixOS/nixpkgs/issues/179242
-    broken = stdenv.targetPlatform.isMusl && !stdenv.targetPlatform.isStatic;
   };
 }

pkgs/development/python-modules/pyelftools/default.nix

@@ -20,7 +20,7 @@ buildPythonPackage rec {
     hash = "sha256-+T5C0ah2oj5E8fWaQbuzYRVgD5bSiUbaArrlxNLojvw=";
   };
 
-  doCheck = stdenv.hostPlatform.system == "x86_64-linux";
+  doCheck = stdenv.hostPlatform.system == "x86_64-linux" && stdenv.hostPlatform.isGnu;
 
   checkPhase = ''
     patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" test/external_tools/readelf