[MAINT] Remove conda from CI Linux Workflows (#794)

* removed conda from ci pipeline

* MAINT: Switching to ubuntu 22.04

* MAINT: Added conditionals to install openmpi according to matrix.os

* MAINT: moving macos MPI_LIB_NRN_PATH env variable assigment

* MAINT: Removing comments and additional test in unit_test.yml

* MAINT: Moving linux CI to a separate workflow

* STY: fixed flake8 errors

* STY: fixed flake8 errors in gui.py

* MAINT: Removing linux commands from macos CI workflow

* TST: Adding python 3.10 and 3.11 to the tests

* TST: Adding quotes to python version 3.10

* TST: Adding double quotes for macos python 3.10 build

* MAINT: removing python 3.11 from CI tests

* MAINT: Testing Ifs in workflow to test multiple OS

* MAINT: Fixed checkout@v4 statement

* MAINT: Adding python 3.9 and 3.10 to  multi porpuse workflow

* MAINT: Removed linux workflow file. Moved logic to unix_unit_tests.yml

.github/workflows/unix_unit_tests.yml

@@ -0,0 +1,68 @@
+  name: Unit tests
+
+  on:
+    push:
+      branches: ['**']
+    pull_request:
+      branches: ['**']
+
+  jobs:
+    build:
+
+      runs-on: ${{ matrix.os }}
+      strategy:
+        matrix:
+          os: [ubuntu-latest,macos-latest]
+          python-version: [3.8, 3.9, '3.10']
+
+      steps:
+        - uses: actions/checkout@v4
+
+        - name: Install Ubuntu System dependencies
+          if: matrix.os == 'ubuntu-latest'
+          shell: bash -el {0}
+          run: |
+              sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+              sudo apt-get update
+              sudo apt-get install libopenmpi-dev openmpi-bin
+
+        - name: Activate conda environment for macOS
+          if: matrix.os == 'macos-latest'
+          uses: conda-incubator/setup-miniconda@v3
+          with:
+            activate-environment: test
+            python-version: ${{ matrix.python-version }}
+            fetch-depth: 2
+
+        - name: Activate Python environment for Ubuntu
+          if: matrix.os == 'ubuntu-latest'
+          uses: actions/setup-python@v5
+          with:
+              python-version: ${{ matrix.python-version }}
+
+        - name: Install Python  dependencies
+          shell: bash -el {0}
+          run: |
+            if [ ${{ matrix.os }} == 'macos-latest' ]; then
+              python -m pip install --upgrade pip
+              conda install --yes -c conda-forge mpi4py openmpi
+            elif [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then 
+              python -m pip install --upgrade pip
+              python -m pip install mpi4py
+            fi
+        - name: Install HNN-core
+          shell: bash -el {0}
+          run: |
+            pip install --verbose '.[opt, parallel, test, gui]'
+        - name: Lint with flake8
+          shell: bash -el {0}
+          run: |
+            flake8 --count hnn_core
+        - name: Test with pytest
+          shell: bash -el {0}
+          run: |
+            python -m pytest ./hnn_core/tests/  --cov=hnn_core --cov-report=xml
+        - name:  Upload coverage to Codecov
+          shell: bash -el {0}
+          run: |
+            bash <(curl -s https://codecov.io/bash) -f ./coverage.xml

.github/workflows/windows_unit_tests.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest]
-        python-version: [3.8, 3.9]
+        python-version: [3.8, 3.9, '3.10']
 
     steps:
       - uses: actions/checkout@v4

hnn_core/gui/gui.py

@@ -1274,7 +1274,8 @@ def load_drive_and_connectivity(params, log_out, drives_out,
     """Add drive and connectivity ipywidgets from params."""
     with log_out:
         # Add connectivity
-        add_connectivity_tab(params, connectivity_out, connectivity_textfields)
+        add_connectivity_tab(params, connectivity_out,
+                             connectivity_textfields)
         # Add drives
         add_drive_tab(params, log_out, drives_out, drive_widgets, drive_boxes,
                       tstop, layout)