Migrate to bump-my-version

bump-my-version is the selected heir of the discontinued bump2version
that was the most popular fork of bumpversion.
It is not a complete drop-in replacement, since most of the command
structure changed. So all the invocations here needed to be adjusted.
However this new tool can (and probably should over the course of time)
be configured in the now famous pyproject.toml file.

.github/workflows/lint.yml

@@ -53,7 +53,8 @@ jobs:
 
       - name: "Verify bump version config"
         run: |
-          bump2version --dry-run --list release
+          bump-my-version bump --dry-run release
+          bump-my-version show-bump
 
       # run black separately from flake8 to get a diff
       - name: "Run black"

templates/github/.ci/assets/release_requirements.txt.j2

@@ -1,3 +1,3 @@
-bump2version
+bump-my-version
 gitpython
 towncrier

templates/github/.github/workflows/create-branch.yml.j2

@@ -27,7 +27,7 @@ jobs:
 
       {{ setup_python() | indent(6) }}
 
-      {{ install_python_deps(["bump2version", "packaging", "-r", "plugin_template/requirements.txt"]) | indent(6) }}
+      {{ install_python_deps(["bump-my-version", "packaging", "-r", "plugin_template/requirements.txt"]) | indent(6) }}
 
       {{ set_secrets(path=plugin_name) | indent(6) }}
 
@@ -36,7 +36,7 @@ jobs:
         run: |
           # Just to be sure...
           git checkout {{ plugin_default_branch }}
-          NEW_BRANCH="$(bump2version --dry-run --list release | sed -Ene 's/^new_version=([[:digit:]]+\.[[:digit:]]+)\..*$/\1/p')"
+          NEW_BRANCH="$(bump-my-version show new_version --increment release | sed -Ene 's/^([[:digit:]]+\.[[:digit:]]+)\.[[:digit:]]+$/\1/p')"
           if [ -z "$NEW_BRANCH" ]
           then
             echo Could not determine the new branch name.
@@ -52,7 +52,7 @@ jobs:
       - name: Bump version on {{ plugin_default_branch }} branch
         working-directory: {{ plugin_name }}
         run: |
-          bump2version --no-commit minor
+          bump-my-version bump --no-commit minor
 
       - name: Remove entries from CHANGES directory
         working-directory: {{ plugin_name }}

templates/github/.github/workflows/lint.yml.j2

@@ -30,7 +30,8 @@ jobs:
 
       - name: "Verify bump version config"
         run: |
-          bump2version --dry-run --list release
+          bump-my-version bump --dry-run release
+          bump-my-version show-bump
       {%- if black %}
 
       # run black separately from flake8 to get a diff

templates/github/.github/workflows/release.yml.j2

@@ -31,7 +31,7 @@ jobs:
 
       {{ setup_python() | indent(6) }}
 
-      {{ install_python_deps(["bump2version", "towncrier"]) | indent(6) }}
+      {{ install_python_deps(["bump-my-version", "towncrier"]) | indent(6) }}
 
       {{ configure_git() | indent(6) }}
 

templates/github/.github/workflows/scripts/release.sh

@@ -10,7 +10,8 @@ then
   exit 1
 fi
 
-NEW_VERSION="$(bump2version --dry-run --list release | sed -ne 's/^new_version=//p')"
+# The tail is a necessary workaround to remove the warning from the output.
+NEW_VERSION="$(bump-my-version show new_version --increment release | tail -n -1)"
 echo "Release ${NEW_VERSION}"
 
 if ! [[ "${NEW_VERSION}" == "${BRANCH}"* ]]
@@ -20,7 +21,7 @@ then
 fi
 
 towncrier build --yes --version "${NEW_VERSION}"
-bump2version release --commit --message "Release {new_version}" --tag --tag-name "{new_version}" --tag-message "Release {new_version}" --allow-dirty
-bump2version patch --commit
+bump-my-version bump release --commit --message "Release {new_version}" --tag --tag-name "{new_version}" --tag-message "Release {new_version}" --allow-dirty
+bump-my-version bump patch --commit
 
 git push origin "${BRANCH}" "${NEW_VERSION}"

templates/github/lint_requirements.txt.j2

@@ -3,7 +3,7 @@
 {% if black -%}
 black==24.3.0
 {% endif -%}
-bump2version
+bump-my-version
 check-manifest
 flake8
 {% if black -%}