| 14 Jul 2025 |
 QuadRadical (Ping) | ill undo it th en | 13:47:49 |
 emily | probably PKG_CONFIG = lib.getExe pkgsBuildHost.pkg-config; would fix the PKG_CONFIG_PATH_* form | 13:47:58 |
| emily | something really dodgy is going on though, I don't understand how more Rust packages aren't broken cross (well maybe they just are…) | 13:48:10 |
| QuadRadical (Ping) | the build error was about udev btw | 13:48:39 |
| QuadRadical (Ping) | > thread 'main' panicked at /build/thin-provisioning-tools-1.2.0-vendor/libudev-sys-0.1.4/build.rs:38:41:
> called `Result::unwrap()` on an `Err` value: "\npkg-config exited with status code 1\n> PKG_CONFIG_PATH=/nix/store/ia5i9cgajql0rhh38yz2p0qibx66fc8d-lvm2-2.03.32-dev/lib/pkgconfig PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 pkg-config --libs --cflags libudev\n\nThe system library `libudev` required by crate `libudev-sys` was not found.\nThe file `libudev.pc` needs to be installed and the PKG_CONFIG_PATH environment variable must contain its parent directory.\nPKG_CONFIG_PATH contains the following:\n - /nix/store/cxy5q3kn7aq9dp3bffznb37gzflanfk5-systemd-minimal-libs-257.6-dev/lib/pkgconfig\n - /nix/store/cxy5q3kn7aq9dp3bffznb37gzflanfk5-systemd-minimal-libs-257.6-dev/share/pkgconfig\n - /nix/store/ia5i9cgajql0rhh38yz2p0qibx66fc8d-lvm2-2.03.32-dev/lib/pkgconfig\n\nHINT: you may need to install a package such as libudev, libudev-dev or libudev-devel.\n"
| 13:48:41 |
| emily | I don't have time to test this right now but it is possible that
strictDeps = true;
depsBuildBuild = [ lvm2.dev ];
buildInputs = [ lvm2.dev udev ];
"PKG_CONFIG_${stdenv.buildPlatform.config}" = lib.getExe pkgsBuildBuild.pkg-config;
"PKG_CONFIG_${stdenv.hostPlatform.config}" = lib.getExe pkgsBuildHost.pkg-config;
will work
| 13:49:25 |
 K900 | Wait, aren't we setting PKGCONFIGwhatever properly already? | 13:50:43 |
 Alyssa Ross | I'm not sure we are for Rust | 13:51:04 |
| QuadRadical (Ping) | nope | 13:51:08 |
| QuadRadical (Ping) | > = note: some arguments are omitted. use `--verbose` to show all linker arguments
> = note: /nix/store/z3za8hfc24wb117s50p8b10agjkgm039-binutils-2.44/bin/ld: skipping incompatible /nix/store/rfznwwiqgpjrpjd9593c0fz7nbbrvnl5-lvm2-aarch64-unknown-linux-gnu-2.03.32-lib/lib/libdevmapper.so when searching for -ldevmapper
> /nix/store/z3za8hfc24wb117s50p8b10agjkgm039-binutils-2.44/bin/ld: cannot find -ldevmapper: No such file or directory
> /nix/store/z3za8hfc24wb117s50p8b10agjkgm039-binutils-2.44/bin/ld: skipping incompatible /nix/store/rfznwwiqgpjrpjd9593c0fz7nbbrvnl5-lvm2-aarch64-unknown-linux-gnu-2.03.32-lib/lib/libdevmapper.so when searching for -ldevmapper
> collect2: error: ld returned 1 exit status
>
>
> error: could not compile `devicemapper` (build script) due to 1 previous error
For full logs, run 'nix log /nix/store/4b61kifbv62aq1vd95a8kx2m8hz977qp-thin-provisioning-tools-aarch64-unknown-linux-gnu-1.2.0.drv'.
| 13:51:10 |
| Alyssa Ross | Rust pkg-config uses some bespoke thing | 13:51:11 |
| Alyssa Ross | I wanted to do it | 13:51:47 |
| Alyssa Ross | https://github.com/NixOS/nixpkgs/pull/196333/files#r996622891 | 13:51:51 |
| Alyssa Ross | IIRC John Ericson later told me he'd no longer block it but then I never revisited it. | 13:52:13 |
| emily | can't we just set this in the Rust hook | 13:52:49 |
| QuadRadical (Ping) | i can test your pr with this to see if it fixes maybe, alyssa | 13:53:13 |
| Alyssa Ross | There is no "Rust hook" | 13:53:16 |
| Alyssa Ross | It would have to be the Cargo hook | 13:53:24 |
| Alyssa Ross | And I think that makes less sense than the pkg-config one | 13:53:32 |
| K900 | We could add a hook | 13:53:34 |
| Alyssa Ross | You might not be using Cargo, but you'll definitely be using pkg-config. | 13:53:38 |
| emily | is there any convention that non-Rust packages follow | 13:54:53 |
| emily | like HOST_PKG_CONFIG or whatever | 13:54:59 |
| emily | even vaguely | 13:55:02 |
| Alyssa Ross | I think it's just to run pkg-config. | 13:55:12 |
| emily | I guess they just do target prefixing? | 13:55:13 |
| Alyssa Ross | $PKG_CONFIG for host, pkg-config for build. | 13:55:24 |
| emily | wow, wtf. gross | 13:56:01 |
| K900 | see even pkg-config hates target | 13:56:06 |
| emily | we could accommodate this in https://docs.rs/pkg-config/latest/src/pkg_config/lib.rs.html#638 | 13:56:15 |
