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Diffstat (limited to 'pkgs/test/rust-sysroot/default.nix')
-rw-r--r-- | pkgs/test/rust-sysroot/default.nix | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/pkgs/test/rust-sysroot/default.nix b/pkgs/test/rust-sysroot/default.nix new file mode 100644 index 00000000000..a5a1596504f --- /dev/null +++ b/pkgs/test/rust-sysroot/default.nix @@ -0,0 +1,60 @@ +{ lib, rust, rustPlatform, fetchFromGitHub }: + +let + mkBlogOsTest = target: rustPlatform.buildRustPackage rec { + name = "blog_os-sysroot-test"; + + src = fetchFromGitHub { + owner = "phil-opp"; + repo = "blog_os"; + rev = "4e38e7ddf8dd021c3cd7e4609dfa01afb827797b"; + sha256 = "0k9ipm9ddm1bad7bs7368wzzp6xwrhyfzfpckdax54l4ffqwljcg"; + }; + + cargoSha256 = "1x8iwgy1irgfkv2yjkxm6479nwbrk82b0c80jm7y4kw0s32r01lg"; + + inherit target; + + RUSTFLAGS = "-C link-arg=-nostartfiles"; + + # Tests don't work for `no_std`. See https://os.phil-opp.com/testing/ + doCheck = false; + + meta = with lib; { + description = "Test for using custom sysroots with buildRustPackage"; + maintainers = with maintainers; [ aaronjanse ]; + platforms = lib.platforms.x86_64; + }; + }; + + # The book uses rust-lld for linking, but rust-lld is not currently packaged for NixOS. + # The justification in the book for using rust-lld suggests that gcc can still be used for testing: + # > Instead of using the platform's default linker (which might not support Linux targets), + # > we use the cross platform LLD linker that is shipped with Rust for linking our kernel. + # https://github.com/phil-opp/blog_os/blame/7212ffaa8383122b1eb07fe1854814f99d2e1af4/blog/content/second-edition/posts/02-minimal-rust-kernel/index.md#L157 + targetContents = { + "llvm-target" = "x86_64-unknown-none"; + "data-layout" = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"; + "arch" = "x86_64"; + "target-endian" = "little"; + "target-pointer-width" = "64"; + "target-c-int-width" = "32"; + "os" = "none"; + "executables" = true; + "linker-flavor" = "gcc"; + "panic-strategy" = "abort"; + "disable-redzone" = true; + "features" = "-mmx,-sse,+soft-float"; + }; + +in { + blogOS-targetByFile = mkBlogOsTest (builtins.toFile "x86_64-blog_os.json" (builtins.toJSON targetContents)); + blogOS-targetByNix = let + plat = lib.systems.elaborate { config = "x86_64-none"; } // { + rustc = { + config = "x86_64-blog_os"; + platform = targetContents; + }; + }; + in mkBlogOsTest (rust.toRustTargetSpec plat); +} |