Provide more prebuilt wheels (#35)

Matrix now configured for

1. Ubuntu-18.04 py3.6 (default), py3.7 (for google colaboratary).
2. Ubuntu-20.04 py3.8 (default), py3.9, py3.10

Fixes chaotic earlier fix for pip --force-reinstall by using
--ignore-installed.

.github/workflows/python.yml

@@ -18,42 +18,72 @@ env:
 
 jobs:
     python-ubuntu:
-      name: "ubuntu pybindings"
-      runs-on: "ubuntu-latest"
+      strategy:
+        fail-fast: false
+        matrix:
+          include:
+              - name: "Ubuntu 18.04 / py3.6"
+                os: "ubuntu-18.04"
+                python-version: "3.6"
+              - name: "Ubuntu 18.04 / py3.7"
+                os: "ubuntu-18.04"
+                python-version: "3.7"
+              - name: "Ubuntu 20.04 / py3.8"
+                os: "ubuntu-20.04"
+                python-version: "3.8"
+              - name: "Ubuntu 20.04 / py3.9"
+                os: "ubuntu-20.04"
+                python-version: "3.9"
+              - name: "Ubuntu 20.04 / py3.10"
+                os: "ubuntu-20.04"
+                python-version: "3.10"
+
+      name: ${{ matrix.name }}
+      runs-on: ${{ matrix.os }}
       steps:
       - name: Checkout
         uses: actions/checkout@v2
         with:
           submodules: recursive
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+
       - name: Install Dependencies
         run: |-
           sudo apt-get update
           sudo apt-get install -y \
             ccache  libprotobuf-dev protobuf-compiler \
             libboost-all-dev libibus-1.0-dev  \
             qttools5-dev qtbase5-dev libqt5svg5-dev libarchive-dev \
-            python3-pybind11 pybind11-dev
+            pybind11-dev python3-setuptools python3-pybind11 
+
       - name: Install MKL
         run: |-
           wget -qO- "https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS-2019.PUB" | sudo apt-key add -
           sudo sh -c "echo deb https://apt.repos.intel.com/mkl all main > /etc/apt/sources.list.d/intel-mkl.list"
           sudo apt-get update -o Dir::Etc::sourcelist="/etc/apt/sources.list.d/intel-mkl.list"
           sudo apt-get install -y --no-install-recommends intel-mkl-64bit-2020.0-088
+
       - name: Generate ccache_vars for ccache based on machine
         shell: bash
         id: ccache_vars
         run: |-
           echo "::set-output name=hash::$(echo ${{ env.ccache_compilercheck }})"
           echo "::set-output name=timestamp::$(date '+%Y-%m-%dT%H.%M.%S')"
+
       - name: Cache-op for build-cache through ccache
         uses: actions/cache@v2
         with:
           path: ${{ env.ccache_dir }}
-          key: ccache-${{ job.id }}-${{ steps.ccache_vars.outputs.hash }}-${{ github.ref }}-${{ steps.ccache_vars.outputs.timestamp }}
+          key: ccache-${{ matrix.name }}-${{ steps.ccache_vars.outputs.hash }}-${{ github.ref }}-${{ steps.ccache_vars.outputs.timestamp }}
           restore-keys: |-
-            ccache-${{ job.id }}-${{ steps.ccache_vars.outputs.hash }}-${{ github.ref }}
-            ccache-${{ job.id }}-${{ steps.ccache_vars.outputs.hash }}
-            ccache-${{ job.id }}
+            ccache-${{ matrix.name }}-${{ steps.ccache_vars.outputs.hash }}-${{ github.ref }}
+            ccache-${{ matrix.name }}-${{ steps.ccache_vars.outputs.hash }}
+            ccache-${{ matrix.name }}
       - name: ccache environment setup
         run: |-
           echo "CCACHE_COMPILER_CHECK=${{ env.ccache_compilercheck }}" >> $GITHUB_ENV
@@ -62,18 +92,20 @@ jobs:
           echo "CCACHE_COMPRESSLEVEL=${{ env.ccache_compresslevel }}" >> $GITHUB_ENV
           echo "CCACHE_DIR=${{ env.ccache_dir }}" >> $GITHUB_ENV
           echo "CCACHE_MAXSIZE=${{ env.ccache_maxsize }}" >> $GITHUB_ENV
+
       - name: ccache prolog
         run: |-
           ccache -s # Print current cache stats
           ccache -z # Zero cache entry
       - name: setup.py 
         run: |-
+          python3 -m pip install wheel
           BUILD_ARCH=core-avx-i python3 setup.py bdist_wheel --universal
 
       # We're happy with just compile for the moment, so cache gets some seeding.
       - name: Install onto root python lib
         run: |-
-          sudo python3 -m pip install --force-reinstall dist/bergamot-*.whl 
+          python3 -m pip install --ignore-installed dist/bergamot-*.whl 
 
       - name: Fetch models from translateLocally repository.
         run: |-
@@ -167,7 +199,7 @@ jobs:
       # We're happy with just compile for the moment, so cache gets some seeding.
       - name: Install onto root python lib
         run: |-
-          python3 -m pip install --force-reinstall dist/bergamot-*.whl 
+          python3 -m pip install dist/bergamot-*.whl 
 
       - name: Fetch models from translateLocally repository.
         run: |-