feat: add postrelease version

commitizen/cli.py

@@ -257,6 +257,12 @@ def __call__(
                         "help": "specify non-negative integer for dev. release",
                         "type": int,
                     },
+                    {
+                        "name": ["--postrelease"],
+                        "action": "store_true",
+                        "default": False,
+                        "help": "mark as a post release",
+                    },
                     {
                         "name": ["--increment"],
                         "help": "manually specify the desired increment",

commitizen/commands/bump.py

@@ -46,6 +46,7 @@ class BumpArgs(Settings, total=False):
     changelog: bool
     check_consistency: bool
     devrelease: int | None
+    postrelease: bool
     dry_run: bool
     file_name: str
     files_only: bool | None
@@ -166,6 +167,7 @@ def _validate_arguments(self, current_version: VersionProtocol) -> None:
                 (self.arguments["increment"], "--increment"),
                 (self.arguments["prerelease"], "--prerelease"),
                 (self.arguments["devrelease"] is not None, "--devrelease"),
+                (self.arguments["postrelease"], "--postrelease"),
                 (self.arguments["local_version"], "--local-version"),
                 (self.arguments["build_metadata"], "--build-metadata"),
                 (self.arguments["major_version_zero"], "--major-version-zero"),
@@ -227,11 +229,15 @@ def _resolve_increment_and_new_version(
         if increment is None and self.arguments["allow_no_commit"]:
             increment = "PATCH"
 
+        if self.arguments["postrelease"]:
+            increment = None
+
         return increment, current_version.bump(
             increment,
             prerelease=self.arguments["prerelease"],
             prerelease_offset=self.bump_settings["prerelease_offset"],
             devrelease=self.arguments["devrelease"],
+            postrelease=self.arguments["postrelease"],
             is_local_version=self.arguments["local_version"],
             build_metadata=self.arguments["build_metadata"],
             exact_increment=self.arguments["increment_mode"] == "exact",

commitizen/defaults.py

@@ -158,6 +158,7 @@ def get_tag_regexes(
         "patch": r"(?P<patch>\d+)",
         "prerelease": r"(?P<prerelease>\w+\d+)?",
         "devrelease": r"(?P<devrelease>\.dev\d+)?",
+        "postrelease": r"(?P<postrelease>\.post\d+)?",
     }
     return {
         **{f"${k}": v for k, v in regexes.items()},

commitizen/version_schemes.py

@@ -75,6 +75,16 @@ def prerelease(self) -> str | None:
         """The prerelease potion of the version is this is a prerelease."""
         raise NotImplementedError("must be implemented")
 
+    @property
+    def is_postrelease(self) -> bool:
+        """Whether this version is a post-release."""
+        raise NotImplementedError("must be implemented")
+
+    @property
+    def postrelease(self) -> str | None:
+        """The postrelease potion of the version is this is a postrelease."""
+        raise NotImplementedError("must be implemented")
+
     @property
     def public(self) -> str:
         """The public portion of the version."""
@@ -124,6 +134,7 @@ def bump(
         prerelease: Prerelease | None = None,
         prerelease_offset: int = 0,
         devrelease: int | None = None,
+        postrelease: bool = False,
         is_local_version: bool = False,
         build_metadata: str | None = None,
         exact_increment: bool = False,
@@ -164,6 +175,13 @@ def prerelease(self) -> str | None:
             return f"{self.pre[0]}{self.pre[1]}"
         return None
 
+    @property
+    def postrelease(self) -> str | None:
+        # version.post is needed for mypy check
+        if self.is_postrelease and self.post is not None:
+            return f"post{self.post}"
+        return None
+
     def generate_prerelease(
         self, prerelease: str | None = None, offset: int = 0
     ) -> str:
@@ -206,6 +224,19 @@ def generate_devrelease(self, devrelease: int | None) -> str:
 
         return f"dev{devrelease}"
 
+    def generate_postrelease(self, postrelease: bool = False) -> str:
+        """Generate postrelease"""
+        if not postrelease:
+            return ""
+
+        # version.post is needed for mypy check
+        if self.is_postrelease and self.post is not None:
+            new_postrelease_number = self.post + 1
+        else:
+            new_postrelease_number = 0
+
+        return f"post{new_postrelease_number}"
+
     def generate_build_metadata(self, build_metadata: str | None) -> str:
         """Generate build-metadata
 
@@ -240,6 +271,7 @@ def bump(
         prerelease: Prerelease | None = None,
         prerelease_offset: int = 0,
         devrelease: int | None = None,
+        postrelease: bool = False,
         is_local_version: bool = False,
         build_metadata: str | None = None,
         exact_increment: bool = False,
@@ -272,9 +304,10 @@ def bump(
             self if base == current_base else cast("BaseVersion", self.scheme(base))
         ).generate_prerelease(prerelease, offset=prerelease_offset)
 
-        # TODO: post version
+        post_version = self.generate_postrelease(postrelease)
+
         return self.scheme(
-            f"{base}{pre_version}{dev_version}{self.generate_build_metadata(build_metadata)}"
+            f"{base}{pre_version}{post_version}{dev_version}{self.generate_build_metadata(build_metadata)}"
         )  # type: ignore[return-value]
 
     def _get_increment_base(

docs/commands/bump.md

@@ -103,7 +103,29 @@ Commitizen supports the [PEP 440][pep440] version format, which includes several
 1.0.0b2.dev1  # Development release 1 of beta 2
 ```
 
-> **Note**: `post` releases (e.g., `1.0.0.post1`) are not currently supported.
+#### Post-releases
+```text
+1.0.0.post0  # Post-release 0
+1.0.0.post1  # Post-release 1
+```
+
+#### Combined Pre-release and Post-release
+```text
+1.0.0a1.post0      # Alpha release 1 with a post-release
+1.0.0rc1.post1     # Release candidate 1 with a post-release
+```
+
+#### Combined Post-release and Development
+```text
+1.0.0.post0.dev0   # Post-release 0 with development release 0
+1.0.0.post1.dev1   # Post-release 1 with development release 1
+```
+
+#### Combined Post-release, Pre-release and Development
+```text
+1.0.0a1.post0.dev0    # Alpha release 1 Post-release 0 with development release 0
+1.0.0rc1.post1.dev1   # Release candidate 1 Post-release 1 with development release 1
+```
 
 ## Command line options
 
@@ -149,6 +171,47 @@ by their precedence and showcase how a release might flow through a development
 - `1.1.0rc0` after bumping the release candidate
 - `1.1.0` next feature release
 
+### `--devrelease`
+
+The bump is a development-release bump. A development release appends a `.devN` segment to the
+current version where `N` is a non-negative integer. Use `--devrelease <N>` to explicitly set the
+development release number. When combined with prereleases or post-releases the `.devN` segment is
+placed after those segments (for example `1.0.0a1.dev0` or `1.0.0.post0.dev0`).
+
+Examples:
+
+```bash
+# create a development release
+cz bump --devrelease 0 --yes    # 1.0.0 -> 1.0.0.dev0
+
+# increment a development release (with new commits)
+cz bump --devrelease 1 --yes    # 1.0.0 -> 1.0.0.dev1
+
+# combined with a prerelease
+cz bump --prerelease alpha --devrelease 0 --yes  # 1.1.0 -> 1.1.0a0.dev0
+```
+
+### `--postrelease`
+
+A post-release preserves the current base version and appends a `.postN` segment. Use the
+`--postrelease` boolean flag to create or increment a post-release. Post-releases start at
+`.post0` and increment the post number on subsequent `--postrelease` bumps (new commits required
+for subsequent increments). To promote a post-release to the next final version, run a normal bump
+without `--postrelease`.
+
+Examples:
+
+```bash
+# create post-release
+cz bump --postrelease --yes    # 0.1.0 -> 0.1.0.post0
+
+# increment post-release (requires new commits)
+cz bump --postrelease --yes    # 0.1.0.post0 -> 0.1.0.post1
+
+# finalize to next release (normal bump)
+cz bump --yes                   # 0.1.0.post1 -> 0.1.1
+```
+
 ### `--increment-mode`
 
 #### `--increment-mode=linear` (default)