Use setup.py for all installs (#632)

Instead of requirements.txt

.github/workflows/check-working-examples.yaml

@@ -21,7 +21,6 @@ jobs:
     - name: Install project
       run: |
         python -m pip install --upgrade pip
-        pip install -r requirements.txt
         pip install -e .
         pip install nbconvert  # For converting Jupyter notebook to python script in the next step
     - name: Run examples

.github/workflows/deploy-pages.yaml

@@ -22,8 +22,7 @@ jobs:
 
     - name: Install dependencies
       run: |
-        pip install -r docs/requirements.txt
-        pip install -e .
+        pip install -e ".[docs]"
 
     # Build the book
     - name: Build the book

docs/dev_guide.md

@@ -210,13 +210,13 @@ is located at `floris/.github/workflows/continuous-integration-workflow.yaml`.
 The online documentation is built with Jupyter Book which uses Sphinx
 as a framework. It is automatically built and hosted by GitHub, but it
 can also be compiled locally. Additional dependencies are required
-for the documentation, and they are listed in ``docs/requirements.txt``.
+for the documentation, and they are listed in the `EXTRAS` of `setup.py`.
 The commands to build the docs are given below. After successfully
 compiling, a file should be located at ``docs/_build/html/index.html``.
 This file can be opened in any browser.
 
 ```bash
-pip install -r docs/requirements.txt
+pip install -e .["docs"]
 jupyter-book build docs/
 
 # Lots of output to the terminal here...

setup.py

@@ -45,7 +45,10 @@
 ]
 
 # What packages are optional?
-# To use: pip install -e ".[develop]" or pip install "floris[develop]"
+# To use:
+#   pip install -e ".[docs,develop]"    install both sets of extras in editable install
+#   pip install -e ".[develop]"         installs only developer packages in editable install
+#   pip install "floris[develop]"       installs developer packages in non-editable install
 EXTRAS = {
     "docs": {
         "jupyter-book",