Fix version specifiers of python packages for conda

.github/workflows/ci-conda.yml

@@ -6,6 +6,9 @@ on:
       - '*'
     branches:
       - 'public/build/**-runci'
+  pull_request:
+    types:
+      - labeled
   workflow_dispatch:
     # Allow to run manually
 
@@ -19,6 +22,13 @@ jobs:
     name: Conda
     runs-on: ${{ matrix.os }}
 
+    # Run on push, workflow dispatch and when certain labels are added 
+    if: |
+      github.event.action != 'labeled' ||
+      github.event.label.name == 'c: packages: optional' || 
+      github.event.label.name == 'c: packages: standard' || 
+      github.event.label.name == 's: run conda ci'
+
     strategy:
       fail-fast: false
       matrix:
@@ -77,13 +87,22 @@ jobs:
           echo "::remove-matcher owner=configure-system-package-warning::"
           echo "::remove-matcher owner=configure-system-package-error::"
 
+          # Manually install ptyprocess for now, until https://github.com/sagemath/sage/issues/32147 is fixed
+          pip install --no-build-isolation -v -v ptyprocess==0.5.1
+
       - name: Build
         shell: bash -l {0}
         run: |
-          pip install --no-build-isolation -v -v -e ./pkgs/sage-conf ./pkgs/sage-setup
-          pip install --no-build-isolation -v -v -e ./src
+          # Use --no-deps and pip check below to verify that all necessary dependencies are installed via conda.
+          pip install --no-build-isolation --no-deps -v -v -e ./pkgs/sage-conf ./pkgs/sage-setup
+          pip install --no-build-isolation --no-deps -v -v -e ./src
         env:
           SAGE_NUM_THREADS: 2
+
+      - name: Verify dependencies
+        if: always()
+        shell: bash -l {0}
+        run: pip check
 
       - name: Test
         shell: bash -l {0}

build/pkgs/ipywidgets/distros/conda.txt

@@ -1 +1 @@
-ipywidgets
+ipywidgets<8.0.0

build/pkgs/lrcalc_python/distros/conda.txt

@@ -1 +1 @@
-python-lrcalc
+python-lrcalc~=2.1

build/pkgs/networkx/distros/conda.txt

@@ -1 +1 @@
-networkx
+networkx<3.0,>=2.4

build/pkgs/ptyprocess/distros/conda.txt

@@ -1 +1,3 @@
-ptyprocess
+# The version should be fixed to 0.5.1 (see https://github.com/sagemath/sage/issues/32147), but this is not available on conda-forge
+# thus don't install ptyprocess with conda, but let pip handle it 
+# ptyprocess

build/pkgs/scipy/distros/conda.txt

@@ -1 +1 @@
-scipy
+scipy<1.11,>=1.5

build/pkgs/sphinx/distros/conda.txt

@@ -1 +1 @@
-sphinx
+sphinx<6,>=5.2