chore: use toml for nightly toolchain (#82)

.github/workflows/pr.yaml

@@ -11,7 +11,7 @@ jobs:
         with:
           tool: just
       - run: |
-          echo "RUST_TOOLCHAIN=$(sed -nr 's/channel = "(.*)"/\1/p' ./rust-toolchain.toml)" >> $GITHUB_ENV
+          echo "RUST_TOOLCHAIN=$(just rust-version)" >> $GITHUB_ENV
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.RUST_TOOLCHAIN }}
@@ -28,8 +28,8 @@ jobs:
         with:
           tool: just
       - run: |
-          echo "RUST_TOOLCHAIN=$(sed -nr 's/channel = "(.*)"/\1/p' ./rust-toolchain.toml)" >> $GITHUB_ENV
-          echo "RUST_TOOLCHAIN_NIGHTLY=$(cat ./rust-toolchain-nightly)" >> $GITHUB_ENV
+          echo "RUST_TOOLCHAIN=$(just rust-version)" >> $GITHUB_ENV
+          echo "RUST_TOOLCHAIN_NIGHTLY=$(just rust-nightly-version)" >> $GITHUB_ENV
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.RUST_TOOLCHAIN_NIGHTLY }}

.github/workflows/release.yaml

@@ -18,8 +18,11 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
+      - uses: taiki-e/install-action@v2
+        with:
+          tool: just
       - run: |
-          echo "RUST_TOOLCHAIN=$(sed -nr 's/channel = "(.*)"/\1/p' ./rust-toolchain.toml)" >> $GITHUB_ENV
+          echo "RUST_TOOLCHAIN=$(just rust-version)" >> $GITHUB_ENV
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.RUST_TOOLCHAIN }}

justfile

@@ -1,9 +1,16 @@
 set quiet
 
-rust_nightly_version := `cat rust-toolchain-nightly`
+rust_version         := `sed -nr 's/channel = "(.*)"/\1/p' rust-toolchain.toml`
+rust_nightly_version := `sed -nr 's/channel = "(.*)"/\1/p' rust-toolchain-nightly.toml`
 
 @default: fmt lint test
 
+rust-version:
+    echo '{{rust_version}}'
+
+rust-nightly-version:
+    echo '{{rust_nightly_version}}'
+
 fmt:
     cargo '+{{rust_nightly_version}}' fmt --all
 

rust-toolchain-nightly.toml

@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly-2024-09-06"