simply try removing version declaration in doc/conf.py

.github/workflows/tests.yml

@@ -2,6 +2,10 @@ name: Test with pytest
 
 on: [pull_request, workflow_call]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   tests:
     name: Test with py${{ matrix.python-version }}

PUBLISHING.rst

@@ -22,7 +22,7 @@ New Dependencies
 ----------------
 If you've added dependencies to trtools or its tests, those dependencies should be listed in
 
-  * setup.py
+  * pyproject.toml
   * the .readthedocs_conda_env.yml file in the root of the repository that's used for building
     TRTool's Read The Docs webpage.
   * the appropriate section of the bioconda recipe (see below)
@@ -45,9 +45,6 @@ Then go through the steps of merging the changes into the master branch:
 #. Run :code:`pytest` and make sure all the tests pass. Then run :code:`./test/cmdline_tests.sh` and make sure those tests pass.
 #. Change the 'Unreleased Changes' section of :code:`RELEASE_NOTES.rst` to the new version number.
 #. Check if any changes have been made that have not yet been documented in the release notes. If so, document them.
-#. Update the version number in setup.py
-#. Run ``python setup.py sdist bdist_wheel`` (this ensures that trtools/version.py contains the updated version number)
-#. Commit the changes to setup.py and trtools/version.py and push them.
 #. Submit a pull request from develop into master on the github webiste.
 #. If the code review and travis checks pass, merge the pull request.
 #. Tag the merge commit with the package version in vX.Y.Z format. (For more details on tagging, see `below`)

doc/conf.py

@@ -13,18 +13,13 @@
 import os
 import sys
 sys.path.insert(0, os.path.abspath('..'))
-import trtools.version
 
 # -- Project information -----------------------------------------------------
 
 project = 'TRTools'
 copyright = '2020, Gymreklab'
 author = 'Gymreklab'
 
-# The full version, including alpha/beta/rc tags
-version = trtools.version.version
-release = trtools.version.version
-
 master_doc = 'index'
 
 # -- General configuration ---------------------------------------------------