chore: upgrade poetry to 1.7.1 and fix associated syntax error

.github/workflows/prepare_release.yaml

@@ -59,7 +59,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install poetry==1.2.2
+          python -m pip install poetry==1.7.1
           make setup_env
 
       # Make sure that the workflow has been triggered from a release branch if this is a patch 

.github/workflows/update_licenses.yaml

@@ -46,7 +46,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install poetry==1.2.2
+          python -m pip install poetry==1.7.1
           make setup_env
 
       - name: Update licenses

.github/workflows/weekly-pip-audit.yaml

@@ -62,7 +62,7 @@ jobs:
           which pip3
 
           python -m pip install --upgrade pip
-          python -m pip install poetry
+          python -m pip install poetry==1.7.1
           make setup_env
 
       - name: Run pip-audit

Makefile

@@ -12,7 +12,7 @@ CONCRETE_PACKAGE_PATH=$(SRC_DIR)/concrete
 COUNT?=1
 RANDOMLY_SEED?=$$RANDOM
 PYTEST_OPTIONS:=
-POETRY_VERSION:=1.2.2
+POETRY_VERSION:=1.7.1
 APIDOCS_OUTPUT?="./docs/developer-guide/api"
 OPEN_PR="true"
 
@@ -27,6 +27,10 @@ CONCRETE_PYTHON_VERSION="concrete-python==2.5.0"
 # --pyproject-toml-file pyproject.toml \
 # --get-pip-install-spec-for-dependency concrete-python)"
 
+# At the end of the command, we currently need to force an 'import skorch' in Python in order to 
+# avoid an obscure bug that led to all pytest commands to fail when installing dependencies with 
+# Poetry >= 1.3. It is however not very clear how this import fixes the issue, as the bug was 
+# difficult to understand and reproduce, so the line might become obsolete in the future.
 .PHONY: setup_env # Set up the environment
 setup_env:
 	@# The keyring install is to allow pip to fetch credentials for our internal repo if needed
@@ -53,6 +57,8 @@ setup_env:
 	poetry run python -m pip install -U --pre "$(CONCRETE_PYTHON_VERSION)"
 	"$(MAKE)" fix_omp_issues_for_intel_mac
 
+	poetry run python -c "import skorch" # Details above
+
 .PHONY: sync_env # Synchronise the environment
 sync_env: 
 	if [[ $$(poetry --version) != "Poetry (version $(POETRY_VERSION))" ]];then \

script/make_utils/setup_os_deps.sh

@@ -138,7 +138,7 @@ if [[ "${OS_NAME}" == "Linux" ]]; then
         wget && \
         ${CLEAR_APT_LISTS:+$CLEAR_APT_LISTS} \
         python3 -m pip install --no-cache-dir --upgrade pip && \
-        python3 -m pip install --no-cache-dir --ignore-installed poetry==1.2.2 && \
+        python3 -m pip install --no-cache-dir --ignore-installed poetry==1.7.1 && \
         linux_install_gitleaks && linux_install_actionlint && linux_install_github_cli"
     fi
     eval "${SETUP_CMD}"
@@ -151,7 +151,7 @@ elif [[ "${OS_NAME}" == "Darwin" ]]; then
 
     brew install curl git git-lfs gitleaks graphviz jq make pandoc shellcheck openssl libomp actionlint unzip gh rsync
     python3 -m pip install -U pip
-    python3 -m pip install poetry==1.2.2
+    python3 -m pip install poetry==1.7.1
 
     echo "Make is currently installed as gmake"
     echo 'If you need to use it as "make", you can add a "gnubin" directory to your PATH from your bashrc like:'