Compiling inside a nix-shell does not work

[iFreilicht]

🐛 Bug description

When trying to compile my rust library using wasm-pack inside a nix shell, I get errors about glibc missing, despite it being installed via nix. I do not get those errors when compiling other libraries to my native target.

$ nix-shell --pure
$ cd iris-hub
$ ldd --version
ldd (GNU libc) 2.32
[...]
$ wasm-pack build
[INFO]: Checking for the Wasm target...
[INFO]: Compiling to Wasm...
warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
package:   /home/[USERNAME]/repos/iris-rs/iris-hub/Cargo.toml
workspace: /home/[USERNAME]/repos/iris-rs/Cargo.toml
   Compiling proc-macro-error v1.0.4
   Compiling serde v1.0.121
   Compiling wasm-bindgen v0.2.69
   Compiling palette v0.5.0
error: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by /home/[USERNAME]/repos/iris-rs/target/release/deps/libwasm_bindgen_macro-3a22ad8fd558cc68.so)
  --> /home/felix/.cargo/registry/src/github.com-1ecc6299db9ec823/wasm-bindgen-0.2.69/src/lib.rs:53:13
   |
53 |     pub use wasm_bindgen_macro::__wasm_bindgen_class_marker;
   |             ^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

[more errors like this, all with the same error message]

error: aborting due to previous error

error: build failed
Error: Compiling your crate to WebAssembly failed
Caused by: failed to execute `cargo build`: exited with exit code: 101
  full command: "cargo" "build" "--lib" "--release" "--target" "wasm32-unknown-unknown"

🤔 Expected Behavior

I get those same errors when trying to compile with the natively installed cargo, where my glibc is severely outdated, but I would expect the compilation to work inside the isolated environment of nix.

So this may be an issue with Ubuntu 18.04LTS, where ldd is ldd (Ubuntu GLIBC 2.27-3ubuntu1.3) 2.27 from 2018.
This may also be an issue with the nix-package itself, I created an issue for that as well.

👟 Steps to reproduce

Optional: Install nix as single-user install. This is easily reversible by sudo rm -rf /nix; rm -rf ~/.nix-profile.
Only do this if you want to reproduce this inside the nix environment.

sh <(curl -L https://nixos.org/nix/install) # Install nix as single-user install (easily reversible)

Log out and back in.

Clone the repo and try to build.

git clone [email protected]:iFreilicht/iris-rs.git # or https://github.com/iFreilicht/iris-rs.git
cd iris-rs
nix-shell --pure  # Skip if reproducing without nix
cd iris-hub
wasm-pack build

🌍 Your environment

Include the relevant details of your environment.
wasm-pack version: wasm-pack 0.9.1
rustc version: rustc 1.49.0 (e1884a8e3 2020-12-29)
OS: Ubuntu 18.04LTS

[ghost]

Try using the following shell.nix after creating a rust-toolchain file in your checkout that declares the rust version you are using: https://gitlab.com/sequoia-pgp/sequoia/-/blob/main/README.md#nixos

I had similar glibc errors but from using rustup to manage Rust toolchains on nixOS.

[listx]

Does rust-lang/futures-rs#2242 (comment) help?

[iFreilicht]

@efx Holy shit, that worked perfectly! I started with your shell.nix and stripped out everything I didn't need. For everyone stumbling over this in the future, this is my final shell.nix that works perfectly for building any wasm-pack crate inside a pure nix shell:

# Use nixpkgs with oxalica rust-bin overlay
let
  rust_overlay = import (builtins.fetchTarball
    "https://github.com/oxalica/rust-overlay/archive/master.tar.gz");
  nixpkgs = import <nixpkgs> { overlays = [ rust_overlay ]; };
  rust_channel = nixpkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain;
in
# Avoid typing `nixpkgs.` before each package name
with nixpkgs;

# Define the shell
pkgs.mkShell {
  nativeBuildInputs = [
    rust_channel # Full rust from overlay, includes cargo
    nodePackages.npm # For all node packages
    wasm-pack # Compiling to WASM and packing with web-stuff
  ];
}

And my rust-toolchain:

[toolchain]
channel = "stable"
components = [ "rust-src" ]
targets = [ "x86_64-unknown-linux-gnu", "wasm32-unknown-unknown" ]

[iFreilicht]

@listx I'm not on NixOS, I'm using the Nix package manager on Ubuntu and Manjaro. I did try fully re-installing everything relating to Rust, but as opposed to NixOS, that doesn't change anything about what glibc version is installed, so I didn't help.