This is mostly "vibe coding". I didn't fully test it.

What I had in mind for #24 was to test all the notebooks and report all errors. After a few tests, I concluded that what you did here was a first step but not enough since the "individual" action stops after the first error.

I tried to following:

--- a/.github/workflows/run.yml
+++ b/.github/workflows/run.yml
@@ -18,6 +18,7 @@ jobs:
       run:
         shell: bash -l {0}
     strategy:
+      fail-fast: false
       matrix:
         python-version: [3.9]
         day: [1, 2, 3]
@@ -32,11 +33,13 @@ jobs:
         conda env create -f environment.yml
     - name: Test notebooks execution
       run: |
+        exit_code=0
         conda activate igwn-py39-lw
         for file in Tutorials/Day_${{ matrix.day }}/*ipynb; do
             echo "Checking ${file}";
             if ! ./tests/check_run.sh "${file}"; then
-                echo "::error file=${file},title=Error";
-                exit 1;
+                echo "::error file=${file},title=Error"
+                exit_code=1
             fi
         done
+        exit "${exit_code}"

but for some reasons it didn't work as expected.

Any idea?

I honestly just asked chat GPT you can see my conversation there.

You can try using continue-on-error: true as chad suggests.

Yes, I remember that the doc was not super clear. I might think at this again soon.

I just revisited this and now I understand the problem better. I tried the same code you tried:

        conda activate odw-py311
        exit_code=0
        for file in Tutorials/Day_${{ matrix.day }}/*ipynb; do
            echo "Checking ${file}";
            if ! ./tests/check_run.sh "${file}"; then
                echo "::error file=${file},title=Error"
                exit_code=1
            fi
        done
        exit $exit_code

I added a a=1/0 line in tutorial 1.1. My expectation was that (3.11, 1) would fail but that (3.11, 2) and (3.11, 3) would pass.
Instead, none of the tutorials passed on any day.

Day 2 and 3 are also returning exit code 1 for some reason I don't understand. I didn't even touch notebooks on day 2 and 3.