Use just command for setting up toolchain

.github/actions/check/action.yml

@@ -5,7 +5,9 @@ runs:
   using: "composite"
   steps:
     - uses: extractions/setup-just@v1
-    - uses: actions-rs/toolchain@v1
+    - name: Install toolchain
+      shell: bash
+      run: just default-toolchain
     - uses: Swatinem/rust-cache@v1
     - name: Format
       shell: bash

.github/actions/desktop/action.yml

@@ -4,7 +4,10 @@ description: Build for desktop
 runs:
   using: "composite"
   steps:
-    - uses: actions-rs/toolchain@v1
+    - uses: extractions/setup-just@v1
+    - name: Install toolchain
+      shell: bash
+      run: just default-toolchain
     - uses: Swatinem/rust-cache@v1
     - name: Install Dependencies
       shell: bash

.github/actions/docs/action.yml

@@ -4,7 +4,10 @@ description: Build documentation
 runs:
   using: "composite"
   steps:
-    - uses: actions-rs/toolchain@v1
+    - uses: extractions/setup-just@v1
+    - name: Install toolchain
+      shell: bash
+      run: just default-toolchain
     - uses: Swatinem/rust-cache@v1
     - name: Install mdbook
       shell: bash

justfile

@@ -22,6 +22,10 @@ fmt: install-rustfmt
 fmt-check: install-rustfmt
   cargo fmt --all -- --check
 
+default-toolchain:
+  # Setups the toolchain from rust-toolchain.toml
+  cargo --version > /dev/null
+
 nightly-toolchain:
   rustup install $NIGHTLY_TOOLCHAIN
   rustup component add rust-src --toolchain $NIGHTLY_TOOLCHAIN