github: set PATH as part of build step

Signed-off-by: Sean Cross <[email protected]>

.github/workflows/nightly.yml

@@ -31,17 +31,6 @@ jobs:
       - name: Setup riscv gnu/gcc toolchain
         uses: gregdavill/setup-riscv-gnu-toolchain@v2
 
-      - name: Add riscv gnu/gcc toolchain to the path
-        shell: bash
-        run: |
-          echo "=== $RUNNER_TEMP/.setup-riscv-gnu-toolchain/bin:"
-          ls -la $RUNNER_TEMP/.setup-riscv-gnu-toolchain/bin
-
-          echo "=== $RUNNER_TEMP/.setup-riscv-gnu-toolchain/riscv-none-elf/bin:"
-          ls -la $RUNNER_TEMP/.setup-riscv-gnu-toolchain/riscv-none-elf/bin
-
-          echo "${RUNNER_TEMP}/.setup-riscv-gnu-toolchain/bin" >> $GITHUB_PATH
-
       - name: Checkout repo
         uses: actions/checkout@v2
         with:
@@ -100,6 +89,7 @@ jobs:
         working-directory: build/rust
         run: |
           export RUST_COMPILER_RT_ROOT=$(pwd)/src/llvm-project/compiler-rt \
+          && export PATH=${RUNNER_TEMP}/.setup-riscv-gnu-toolchain/bin:$PATH \
           && rm -rf target \
           && cargo build \
             --target riscv32imac-unknown-xous-elf \