Trying to get MacOS sed to work like GNU, and checking resulting environment file

Author: jmwright

appveyor.yml

@@ -36,6 +36,8 @@ init:
               OS=Linux ;
           else
               OS=MacOSX ;
+              brew install gsed
+              export PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH";
           fi ;
           curl -sL https://repo.anaconda.com/miniconda/Miniconda3-latest-$OS-x86_64.sh > miniconda.sh
     - sh: bash miniconda.sh -b -p $HOME/miniconda;
@@ -44,23 +46,14 @@ init:
 install:
     - conda config --set always_yes yes --set changeps1 no
     - conda update -q conda
-    - pwsh: ((Get-Content -path environment.yml -Raw) -replace 'python>=3.6',"python=$env:PYTHON_VERSION") | Set-Content -Path environment.yml
+    # Python version substitution in environment.yml for Linux/MacOS, update the Python version to be replaced when we raise the minimum Python version
     - sh: sed -i 's/python>=3.6/python=$PYTHON_VERSION/g' environment.yml
-    - pwsh: type environment.yml
+    # Python version substitution in environment.yml for Windows, update the Python version to be replaced when we raise the minimum Python version
+    - pwsh: ((Get-Content -path environment.yml -Raw) -replace 'python>=3.6',"python=$env:PYTHON_VERSION") | Set-Content -Path environment.yml
+    - sh: cat environment.yml
     - conda env create -f environment.yml
     - activate cadquery
-    #- cmd: conda install -c conda-forge -c defaults -c cadquery python=%PYTHON_VERSION%
-    #- sh: conda install -c conda-forge -c defaults -c cadquery python=$PYTHON_VERSION
-    #- pip install black=19.10b0
-    #- cmd: conda install python=%PYTHON_VERSION%
-    #- sh: conda install python=$PYTHON_VERSION
     - pip install git+https://github.com/CadQuery/[email protected]
-    #- pip install mypy
-    #- pip install pytest
-    #- pip install pytest-cov
-    #- pip install path
-    #- pip install docutils
-    #- pip install codecov
 
 build: false