CI Workflow updates with working tests (#1)

* Switch dependency management to pipenv

* Remove required python version from Pipfile

* Improved test job

* Install pipenv with specific python version

* Drop python 3.6 support

* Add importlib-metadata module

Apparently required by macos

* Cargo cache for test runs

* Add typing-extensions package

* Update installation instructions in README

* rust cache key includes python version

.github/workflows/CI.yml

@@ -10,19 +10,33 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.6', '3.7', '3.10']
+        python-version: ['3.7', '3.10']
     steps:
+    - uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: stable
+        override: true
     - uses: actions/checkout@v2
-    - uses: messense/maturin-action@v1
+    - uses: actions/cache@v2
       with:
-        command: develop
-    - uses: psf/black@stable
+        path: |
+          ~/.cargo/bin/
+          ~/.cargo/registry/index/
+          ~/.cargo/registry/cache/
+          ~/.cargo/git/db/
+          target/
+        key: ${{ runner.os }}-python-${{ matrix.python-version }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+    - name: Install pipenv
+      run: pipx install pipenv
     - uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
-        cache: 'pip'
-    - run: pip install -r requirements.txt
-    - run: pytest
+        cache: 'pipenv'
+    - name: pipenv install
+      run: pipenv install --dev --python ${{ matrix.python-version }}
+    - run: pipenv run maturin develop
+    - run: pipenv run pytest
 
   linux:
     runs-on: ubuntu-latest

Pipfile

@@ -0,0 +1,12 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[dev-packages]
+black = "*"
+maturin = "*"
+pytest = "*"
+atomicwrites = "*"
+importlib-metadata = "*"
+typing-extensions = "*"

README.md

@@ -74,15 +74,20 @@ Option | Description | Type | Default
 ## Development
 
 1. Install [Rust](https://www.rust-lang.org/tools/install)
-1. Install [Python 3](https://www.python.org/downloads/)
+1. Install [Python 3.7+](https://www.python.org/downloads/)
+1. Install [Pipenv](https://pipenv.pypa.io/en/latest/)
 1. Clone this repository and navigate to it via command line
    ```sh
    git clone https://github.com/nfrasser/pyoxipng.git
    cd pyoxipng
    ```
 1. Install dependencies
    ```sh
-   pip install -r requirements.txt
+   pipenv install --dev
+   ```
+1. Activate the dev environment
+   ```
+   pipenv shell
    ```
 1. Build
    ```sh

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "pyoxipng"
-requires-python = ">=3.6"
+requires-python = ">=3.7"
 classifiers = [
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Rust",