Nightly web build (linera-io#2516)

* Promote lint toolchain to nightly build toolchain

* Add `rust-src` component to nightly toolchain

* `.github/workflows/rust.yml`: run Web tests with nightly toolchain

.github/workflows/rust.yml

@@ -114,6 +114,9 @@ jobs:
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
     - uses: actions/checkout@v3
+    - name: Switch to nightly Rust toolchain
+      run: |
+        ln -sf toolchains/nightly/rust-toolchain.toml
     - uses: actions-rust-lang/setup-rust-toolchain@v1
     - name: Compile `linera-client` for the browser
       run: |
@@ -159,7 +162,7 @@ jobs:
         | xargs -0 scripts/target/release/check_copyright_header
     - name: Put lint toolchain file in place
       run: |
-        ln -sf toolchains/lint/rust-toolchain.toml
+        ln -sf toolchains/nightly/rust-toolchain.toml
     - uses: actions-rust-lang/setup-rust-toolchain@v1
     - name: Install cargo-machete
       run: |
@@ -225,7 +228,7 @@ jobs:
     - name: Restore `rust-toolchain.toml` file
       if: '!cancelled()'
       run: |
-        ln -sf toolchains/build/rust-toolchain.toml
+        ln -sf toolchains/stable/rust-toolchain.toml
     - name: Check linera-service GraphQL schema
       run: |
         diff <(cargo run --locked --bin linera-schema-export) linera-service-graphql-client/gql/service_schema.graphql

default.nix

@@ -1,8 +1,5 @@
-{ crane, pkgs }:
-let
-  rust-toolchain = (pkgs.rust-bin.fromRustupToolchainFile
-    ./toolchains/build/rust-toolchain.toml);
-in ((crane.mkLib pkgs).overrideToolchain rust-toolchain).buildPackage {
+{ crane, pkgs, rust-toolchain }:
+((crane.mkLib pkgs).overrideToolchain rust-toolchain).buildPackage {
   pname = "linera";
   src = ./.;
   cargoExtraArgs = "-p linera-service";

flake.nix

@@ -19,27 +19,22 @@
     ];
     perSystem = { config, self', inputs', pkgs, lib, system, ... }:
       let
-        cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
-        nonRustDeps = with pkgs; [
-        ];
-        linera = pkgs.callPackage ./. { inherit (inputs) crane; };
-      in {
-        _module.args.pkgs = import inputs.nixpkgs {
-          inherit system;
-          overlays = [ (import inputs.rust-overlay) ];
+        linera = rust-toolchain: pkgs.callPackage ./. {
+          inherit (inputs) crane;
+          inherit rust-toolchain;
         };
-
-        packages.default = linera;
-
-        # Rust dev environment
-        devShells.default = pkgs.mkShell {
+        rust-stable = (pkgs.rust-bin.fromRustupToolchainFile
+          ./toolchains/stable/rust-toolchain.toml);
+        rust-nightly = (pkgs.rust-bin.fromRustupToolchainFile
+          ./toolchains/nightly/rust-toolchain.toml);
+        devShell = rust-toolchain: pkgs.mkShell {
           inputsFrom = [
             config.treefmt.build.devShell
-            linera
+            (linera rust-toolchain)
           ];
           shellHook = ''
             # For rust-analyzer 'hover' tooltips to work.
-            export RUST_SRC_PATH=${linera.rust-toolchain.availableComponents.rust-src}
+            export RUST_SRC_PATH=${rust-toolchain.availableComponents.rust-src}
             export LIBCLANG_PATH=${pkgs.libclang.lib}/lib
             export PATH=$PWD/target/debug:~/.cargo/bin:$PATH
             export ROCKSDB_LIB_DIR=${pkgs.rocksdb}/lib
@@ -48,14 +43,18 @@
             rust-analyzer
           ];
         };
-
-        devShells.lint = pkgs.mkShell {
-          nativeBuildInputs = [
-            (pkgs.rust-bin.fromRustupToolchainFile
-              ./toolchains/lint/rust-toolchain.toml)
-          ];
+      in {
+        _module.args.pkgs = import inputs.nixpkgs {
+          inherit system;
+          overlays = [ (import inputs.rust-overlay) ];
         };
 
+        packages.default = linera;
+
+        # Rust dev environment
+        devShells.default = devShell rust-stable;
+        devShells.nightly = devShell rust-nightly;
+
         # Add your auto-formatters here.
         # cf. https://numtide.github.io/treefmt/
         treefmt.config = {

rust-toolchain.toml

@@ -1 +1 @@
-toolchains/build/rust-toolchain.toml
+toolchains/stable/rust-toolchain.toml

toolchains/lint/rust-toolchain.toml → toolchains/nightly/rust-toolchain.toml

@@ -1,5 +1,5 @@
 [toolchain]
 channel = "nightly-2024-07-11"
-components = [ "clippy", "rustfmt" ]
+components = [ "clippy", "rustfmt", "rust-src" ]
 targets = [ "wasm32-unknown-unknown" ]
 profile = "minimal"