rust template unusable on aarch64-darwin

[Pegasust]

Cross-posting purposes only. The merge on numtide/devshell#266 will fix this issue

Here's some context to make this issue self-contained

Symptoms

$ cargo build
error: linking with `cc` failed: exit status: 134
  |
  = note: LC_ALL="C" PATH="/nix...
...
  = note: xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
          libc++abi: terminating with uncaught exception of type std::runtime_error: codesign_failed: 1
          /nix/store/pz87iqygyl6gklpqlwd8bjs8sqd6hvl3-post-link-sign-hook: line 4: 74910 Abort trap: 6           CODESIGN_ALLOCATE=codesign_allocate /nix/store/ss3qicb0gzh00f87c6xs9nfdj92mad8k-sigtool-0.1.3/bin/codesign -f -s - "$linkerOutput"

This is actually a mint cargo workspace with `lsp`, and many other "hello world" crates

$ cargo build
error: linking with `cc` failed: exit status: 134
  |
  = note: LC_ALL="C" PATH="/nix/store/40rb2myhi22n2jr3a1f5r7n673j1llcw-rust-minimal-1.72.0-nightly-2023-06-29/lib/rustlib/aarch64-apple-darwin/bin:/nix/store/hayj70xixmzri25f0c2vbdrn1q3xy31s-devs
hell-dir/bin:/nix/store/ysnid4p0w4r9kg9834i327j4lxhcb50f-bash-interactive-5.2-p15/bin:/path-not-set:/Users/hungtran/local_repos/zork/.bin:/Users/hungtran/.nix-profile/bin:/nix/var/nix/profiles/de
fault/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/hungtran/Applications/Home Manager Apps/kitty.app/Contents/MacOS:/nix/store/cp70ajpjw8arik7x8rrq27w1swv
22s9r-neovim-ruby-env/bin:/nix/store/c6jz0w2gwc4clmhawsmh203yrh31pq6m-nodejs-18.16.1/bin:/nix/store/ihn63vylyqmjjgr63r9shzvrjbfv16jg-tree-sitter-0.20.8/bin:/nix/store/vbn3abzrfj32qy59g868hb7ndrwk
igl0-fzf-0.42.0/bin:/nix/store/ndy7daf60jsqwaqzm5b8g44fvra43sc0-ripgrep-13.0.0/bin:/nix/store/dkjx87xjnh7kk2yjbsqw608jgpp2a4j6-zk-0.14.0/bin:/nix/store/s55k81yblx0k1qdily40n7jl67215ivs-fd-8.7.0/b
in:/nix/store/4ypgz0lrii62saqgrcn432sa13clqns0-clang-11.1.0-lib/bin:/nix/store/pi2c2p233k099y0d21mwjkhnyg8r9wa5-nil-2023-05-09/bin:/nix/store/bx4g81bdsq9mlby0dijlr82xcgwk8mry-rust-minimal-1.72.0-
nightly-2023-06-29/bin:/nix/store/wkrvjivxffs6g7q728n12mgb427yhggj-nickel-1.0.0/bin:/nix/store/vjb7cj5ljmkqljcnzj6rmbc2n24vh9c4-nls-1.0.0/bin:/nix/store/fjbcw6iz6h3gyi6yigin682gcsbn6994-sg.nvim/b
in:/nix/store/1qmphwp6j96aimch0z9rjq7xlrkf3dyv-go-1.20.5/bin:/nix/store/vxs6h5zj2lnij97w207ml2bqv4bmqqya-lua-language-server-3.6.22/bin:/nix/store/i2ga2q14vr1dwbh3iz6nk06jqi451gz8-pyright-1.1.316
/bin:/nix/store/cfmx8v5iigf3i0rm1z2wdyfn2bqpy9hp-python3.10-pylint-2.16.2/bin:/nix/store/dhj27qx5c2yx4bzq12j18yzlsvyqqbg0-python3.10-flake8-6.0.0/bin:/nix/store/9prmj5wrivli1ijshg09gd8j5zzq07iv-a
pple-framework-System-11.0.0/bin:/nix/store/vfvlqvyzyvhns7gyz1bvgj8q6307i4rm-apple-framework-CoreFoundation-11.0.0/bin:/Users/hungtran/.local/share/nvim/mason/bin" VSLANG="1033" ZERO_AR_DATE="1" 
"cc" "-arch" "arm64" "/tmp/rustcMg0rTh/symbols.o" "/Users/hungtran/local_repos/zork/target/debug/deps/lsp-d92861ee639d84ad.1jr4o2kw6y3ksl0u.rcgu.o" "/Users/hungtran/local_repos/zork/target/debug/
deps/lsp-d92861ee639d84ad.204ae4tecutcekgy.rcgu.o" "/Users/hungtran/local_repos/zork/target/debug/deps/lsp-d92861ee639d84ad.3moztt19cmw0o1ks.rcgu.o" "/Users/hungtran/local_repos/zork/target/debug
/deps/lsp-d92861ee639d84ad.46lr2edtiuegj2kp.rcgu.o" "/Users/hungtran/local_repos/zork/target/debug/deps/lsp-d92861ee639d84ad.50vptv1ge4mtdwgr.rcgu.o" "/Users/hungtran/local_repos/zork/target/debu
g/deps/lsp-d92861ee639d84ad.frtdyazq0exhm9p.rcgu.o" "/Users/hungtran/local_repos/zork/target/debug/deps/lsp-d92861ee639d84ad.31rjo0bzdr75oec0.rcgu.o" "-L" "/Users/hungtran/local_repos/zork/target
/debug/deps" "-F" "/nix/store/hayj70xixmzri25f0c2vbdrn1q3xy31s-devshell-dir/Library/Frameworks" "-L" "/nix/store/40rb2myhi22n2jr3a1f5r7n673j1llcw-rust-minimal-1.72.0-nightly-2023-06-29/lib/rustli
b/aarch64-apple-darwin/lib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libstd-05943b50472cd2d6.rlib"
 "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libpanic_unwind-d4df49eb937c25fb.rlib" "/nix/store/57phj
a1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libobject-d9455aebba8055d5.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26j
xga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libmemchr-218138b1ab541b3e.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nigh
tly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libaddr2line-d187e6473663e7f6.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch6
4-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libgimli-2b31aea7ba1669cf.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustli
b/aarch64-apple-darwin/lib/librustc_demangle-c1dfb86e23640844.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-
darwin/lib/libstd_detect-27914095f0dba818.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libhashbr
own-b8e271a3426f8722.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/librustc_std_workspace_alloc-4
96f42c51ffe7099.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libminiz_oxide-6bd89cd5d42afec5.rli
b" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libadler-37f6ce1bec5f08ec.rlib" "/nix/store/57phja1hxk
5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libunwind-6d20841979b6d418.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-r
ust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libcfg_if-ecea5914c2ef473a.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2
023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/liblibc-cc741fbf27f447be.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-da
rwin/lib/rustlib/aarch64-apple-darwin/lib/liballoc-4e0b06e5749dd743.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-
apple-darwin/lib/librustc_std_workspace_core-70a0087d6881bc8d.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-
darwin/lib/libcore-6fc8bef838a5948d.rlib" "/nix/store/57phja1hxk5wlz49ia6gp3k98n26jxga-rust-std-1.72.0-nightly-2023-06-29-aarch64-apple-darwin/lib/rustlib/aarch64-apple-darwin/lib/libcompiler_bui
ltins-a2bfdcafe5010b58.rlib" "-lSystem" "-lc" "-lm" "-L" "/nix/store/40rb2myhi22n2jr3a1f5r7n673j1llcw-rust-minimal-1.72.0-nightly-2023-06-29/lib/rustlib/aarch64-apple-darwin/lib" "-o" "/Users/hun
gtran/local_repos/zork/target/debug/deps/lsp-d92861ee639d84ad" "-Wl,-dead_strip" "-nodefaultlibs"
  = note: xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
          libc++abi: terminating with uncaught exception of type std::runtime_error: codesign_failed: 1
          /nix/store/pz87iqygyl6gklpqlwd8bjs8sqd6hvl3-post-link-sign-hook: line 4: 74910 Abort trap: 6           CODESIGN_ALLOCATE=codesign_allocate /nix/store/ss3qicb0gzh00f87c6xs9nfdj92mad8k-si
gtool-0.1.3/bin/codesign -f -s - "$linkerOutput"
          clang-11: error: linker command failed with exit code 134 (use -v to see invocation)
          

error: could not compile `lsp` (bin "lsp") due to previous error

What's the problem?

xcbuild on its own require 2 entries of $PATH to be appended so that rustc, thus cargo build, can see and use xcrun via $PATH.

Self-contained fix

It's possible to fix this issue selfishly in divnix/std by prepending $PATH

      {
        name="PATH"; 
        prefix = let 
          inherit (pkgs) xcbuild; 
        in lib.makeBinPath [
          xcbuild 
          "${xcbuild}/Toolchains/XcodeDefault.xctoolchain"
        ];
      }

This does come with some potential pitfalls that the upstream fix also faces (see the upstream error for more details)

[Pegasust]

numtide/devshell#266 merged