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| 22 Jan 2022 |
| bernardo | NixOS beginner here. I need to build a Rust crate (https://github.com/paritytech/substrate-contracts-node) that depends on Clang.
I keep running into:
I've tried adding some packages to Home Manager (libclang, llvmPackages.libclang, clang), without success.
I also did a brief google search but I'm quite confused about how to go about this.
| 20:08:04 |
| bernardo | * NixOS beginner here. I need to build a Rust crate (https://github.com/paritytech/substrate-contracts-node) that depends on Clang.
I keep running into:
thread 'main' panicked at 'Unable to find libclang: "couldn't find any valid shared libraries matching: ['libclang.so', 'libclang-*.so', 'libclang.so.*', 'libclang-*.so.*'], set the `LIBCLANG_PATH` environment variable to a path where one of these files can be found (invalid: [])"', /home/bear/.cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.59.2/src/lib.rs:2144:31
I've tried adding some packages to Home Manager (libclang, llvmPackages.libclang, clang), without success.
I also did a brief google search but I'm quite confused about how to go about this.
| 20:08:26 |
 Mark | LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib"; | 20:12:17 |
| bernardo | In reply to @mikroskeem:d0.ee
LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib"; I saw this suggestion during my Google search, but I couldn't figure out which file to add this line to. I tried adding it to the same file where my Home Manager definitions are with no success. | 20:13:59 |
| Zhaofeng Li | In reply to @bernardo:matrix.parity.io
I saw this suggestion during my Google search, but I couldn't figure out which file to add this line to. I tried adding it to the same file where my Home Manager definitions are with no success. It's best to have a separate shell environment for each project, and you can add this in your mkShell | 20:15:26 |
| Mark | ^ | 20:16:10 |
| bernardo | hmm ok so I should write a shell.nix file for this specific project? | 20:16:21 |
| Mark | yes, or flake.nix preferably | 20:16:31 |
| Mark | & echo use flake > .envrc | 20:16:41 |
| bernardo | gotcha... thanks guys! | 20:17:04 |
| Mark | https://github.com/ZentriaMC/neard-nix/blob/master/default.nix | 20:17:15 |
| Mark | and of course flake.nix there | 20:20:51 |
| 23 Jan 2022 |
| bernardo | I'm using this shell.nix: https://github.com/paritytech/substrate/blob/master/shell.nix
applied at the root of this project: https://github.com/paritytech/substrate-contracts-node
I executed $ nix-shell then $ cargo build --release
and now I'm running into:
error[E0658]: use of unstable library feature 'proc_macro_is_available'
I'm guessing there's something missing on the shell.nix file?
| 01:31:47 |
| Zhaofeng Li | What does rustc --version show? | 01:33:19 |
