Merge #1059

1059: Ensure successful CI conclusion with empty matrix. r=Emilgardis a=Alexhuszagh

Closes #1043.

Co-authored-by: Alex Huszagh <[email protected]>

Author: bors[bot]

.github/workflows/ci.yml

@@ -91,6 +91,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: ./.github/actions/setup-rust
+
       - name: Generate matrix
         id: generate-matrix
         run: cargo xtask ci-job target-matrix
@@ -102,7 +103,7 @@ jobs:
     name: target (${{ matrix.pretty }},${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     needs: [shellcheck, test, generate-matrix, check]
-    if: github.event_name == 'push'
+    if: github.event_name == 'push' && needs.generate-matrix.outputs.matrix != '{}' && needs.generate-matrix.outputs.matrix != '[]' && needs.generate-matrix.outputs.matrix != ''
     strategy:
       fail-fast: false
       matrix:

xtask/src/ci/target_matrix.rs

@@ -32,7 +32,9 @@ pub(crate) fn run(message: String, author: String) -> Result<(), color_eyre::Rep
             std: target.std.map(|b| b as u8),
         })
         .collect::<Vec<_>>();
-    gha_output("matrix", &serde_json::to_string(&matrix)?);
+    let json = serde_json::to_string(&matrix)?;
+    gha_print(&json);
+    gha_output("matrix", &json);
     Ok(())
 }