-L/nix/store/6yl1211hawn5zmxg1cbp1miiq2h0kr7x-rustc-1.67.0/lib
  -lrustc_driver-462408defaa2092e
  -lstd-1419ef55ae659654

linker is being passed this, where /nix/store/6yl1211hawn5zmxg1cbp1miiq2h0kr7x-rustc-1.67.0/lib/librustc_driver-462408defaa2092e.dylib exists, but it's refusing to use the absolute path, and i have no clue why. it works fine for e.g. libLLVM and zlib in the same binary, though.

-L/nix/store/p0zl4f4wxr9sas3890mps2bsnr0wnb73-zlib-1.2.13/lib
-lz

this exact same invocation works fine!

one rustc later:

./result/bin/clippy-driver:
    @rpath/librustc_driver-462408defaa2092e.dylib (compatibility version 0.0.0, current version 0.0.0)
    @rpath/libstd-1419ef55ae659654.dylib (compatibility version 0.0.0, current version 0.0.0)

🙁

In reply to @vcunat:matrix.org
aarch64-linux gcc bootstrap:
https://github.com/NixOS/nixpkgs/pull/207135#issuecomment-1415896172

In reply to @tpw_rules:matrix.org
I think this is ready to go? upload needs to be done

https://github.com/NixOS/nixpkgs/pull/76732#issuecomment-1442172547

Was having lists in env automatically have toString run on them ever considered?

nix-repl> (keepassxc.overrideAttrs(oA: { passthru.oA = oA; })).oA.env.NIX_CFLAGS_COMPILE
[ "-Wno-old-style-cast" "-Wno-error" "-D__BIG_ENDIAN__=0" ]

nix-repl> keepassxc.NIX_CFLAGS_COMPILE
"-Wno-old-style-cast -Wno-error -D__BIG_ENDIAN__=0"

nix-repl> (keepassxc.overrideAttrs(oA: { passthru.oA = oA; })).oA.NIX_CFLAGS_COMPILE
error:
       … while evaluating the attribute 'oA.NIX_CFLAGS_COMPILE'

         at «string»:1:32:

            1| (keepassxc.overrideAttrs(oA: { passthru.oA = oA; })).oA.NIX_CFLAGS_COMPILE
             |                                ^

       error: attribute 'NIX_CFLAGS_COMPILE' missing

       at «string»:1:1:

            1| (keepassxc.overrideAttrs(oA: { passthru.oA = oA; })).oA.NIX_CFLAGS_COMPILE
             | ^

diff --git a/pkgs/applications/misc/keepassxc/default.nix b/pkgs/applications/misc/keepassxc/default.nix
index 3c74b6e9175..158ffe5fc8d 100644
--- a/pkgs/applications/misc/keepassxc/default.nix
+++ b/pkgs/applications/misc/keepassxc/default.nix
@@ -49,11 +49,11 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-amedKK9nplLVJTldeabN3/c+g/QesrdH+qx+rba2/4s=";
   };
 
-  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang (toString [
+  env.NIX_CFLAGS_COMPILE = lib.optionals true [
     "-Wno-old-style-cast"
     "-Wno-error"
     "-D__BIG_ENDIAN__=${if stdenv.isBigEndian then "1" else "0"}"
-  ]);
+  ];
 
   NIX_LDFLAGS = lib.optionalString stdenv.isDarwin "-rpath ${libargon2}/lib";
 
diff --git a/pkgs/stdenv/generic/make-derivation.nix b/pkgs/stdenv/generic/make-derivation.nix
index 3d60934557c..fc36edf9ee4 100644
--- a/pkgs/stdenv/generic/make-derivation.nix
+++ b/pkgs/stdenv/generic/make-derivation.nix
@@ -537,8 +537,8 @@ else let
     assert lib.assertMsg (overlappingNames == [ ])
       "The ‘env’ attribute set cannot contain any attributes passed to derivation. The following attributes are overlapping: ${lib.concatStringsSep ", " overlappingNames}";
     lib.mapAttrs
-      (n: v: assert lib.assertMsg (lib.isString v || lib.isBool v || lib.isInt v || lib.isDerivation v)
-        "The ‘env’ attribute set can only contain derivation, string, boolean or integer attributes. The ‘${n}’ attribute is of type ${builtins.typeOf v}."; v)
+      (n: v: assert lib.assertMsg (lib.isString v || lib.isBool v || lib.isInt v || lib.isDerivation v || lib.isList v)
+        "The ‘env’ attribute set can only contain derivation, list, string, boolean or integer attributes. The ‘${n}’ attribute is of type ${builtins.typeOf v}."; (if lib.isList v then toString v else v))
       env;
 
 in

[nix-shell:~]$ which hello
/nix/store/nfzcdd26n8qs7dyh6kwz2hmp9rkppdcg-hello-2.12.1/bin/hello

[nix-shell:~]$ patchelf --print-needed /nix/store/nfzcdd26n8qs7dyh6kwz2hmp9rkppdcg-hello-2.12.1/bin/hello
libc.so.6
ld-linux-aarch64.so.1

anyone know why we add ldso to needed for (as far as I can tell) just aarch64? i can't get the same result on x86_64-linux, and I don't see any extra flags added via ld-wrapper that would cause this.