PEP 440 support

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
2024-11-23 04:29:33 +01:00 · 2021-07-06 13:56:48 +02:00 · 2021-07-06 13:56:48 +02:00 · a1770d2eba
commit a1770d2eba
parent 8a0bc9fddd
14 changed files with 10946 additions and 6 deletions
--- a/README.md
+++ b/README.md
@ -23,6 +23,7 @@ ___
 * [`tags` input](#tags-input)
  * [`type=schedule`](#typeschedule)
  * [`type=semver`](#typesemver)
+  * [`type=pep440`](#typepep440)
  * [`type=match`](#typematch)
  * [`type=edge`](#typeedge)
  * [`type=ref`](#typeref)
@ -384,11 +385,11 @@ tags: |
 ```

 Will be used on a [push tag event](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push)
-and requires a valid Git tag [semver](https://semver.org/) but you can also use a custom value through `value`
+and requires a valid [semver](https://semver.org/) Git tag, but you can also use a custom value through `value`
 attribute.

 `pattern` attribute supports [Handlebars template](https://handlebarsjs.com/guide/) with the following expressions:
-* `raw` ; the actual semver
+* `raw` ; the actual tag
 * `version` ; shorthand for `{{major}}.{{minor}}.{{patch}}` (can include pre-release)
 * `major` ; major version identifier
 * `minor` ; minor version identifier
@ -416,6 +417,51 @@ tags: |
  type=semver,enable=true,priority=900,prefix=,suffix=,pattern=,value=
 ```

+### `type=pep440`
+
+```yaml
+tags: |
+  # minimal
+  type=pep440,pattern={{version}}
+  # use custom value instead of git tag
+  type=pep440,pattern={{version}},value=1.0.0
+```
+
+Will be used on a [push tag event](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push)
+and requires a Git tag that conforms to [PEP 440](https://www.python.org/dev/peps/pep-0440/), but you can also use a
+custom value through `value` attribute.
+
+`pattern` attribute supports [Handlebars template](https://handlebarsjs.com/guide/) with the following expressions:
+* `raw` ; the actual tag
+* `version` ; cleaned version
+* `major` ; major version identifier
+* `minor` ; minor version identifier
+* `patch` ; patch version identifier
+
+| Git tag            | Pattern                                                  | Output               |
+|--------------------|----------------------------------------------------------|----------------------|
+| `1.2.3`            | `{{raw}}`                                                | `1.2.3`              |
+| `1.2.3`            | `{{version}}`                                            | `1.2.3`              |
+| `v1.2.3`           | `{{version}}`                                            | `1.2.3`              |
+| `1.2.3`            | `{{major}}.{{minor}}`                                    | `1.2`                |
+| `1.2.3`            | `v{{major}}`                                             | `v1`                 |
+| `1.2.3rc2`         | `{{raw}}`                                                | `1.2.3rc2`*          |
+| `1.2.3rc2`         | `{{version}}`                                            | `1.2.3rc2`           |
+| `1.2.3rc2`         | `{{major}}.{{minor}}`                                    | `1.2.3rc2`*          |
+| `1.2.3post1`       | `{{major}}.{{minor}}`                                    | `1.2.3.post1`*       |
+| `1.2.3beta2`       | `{{major}}.{{minor}}`                                    | `1.2.3b2`*           |
+| `1.0dev4`          | `{{major}}.{{minor}}`                                    | `1.0.dev4`*          |
+
+> *dev/pre/post release will only extend `{{version}}` as tag because they are updated frequently,
+> and contain many breaking changes that are (by the author's design) not yet fit for public consumption.
+
+Extended attributes and default values:
+
+```yaml
+tags: |
+  type=pep440,enable=true,priority=900,prefix=,suffix=,pattern=,value=
+```
+
 ### `type=match`

 ```yaml
--- a/tests/fixtures/event_tag_1.0dev4.env
+++ b/tests/fixtures/event_tag_1.0dev4.env
@ -0,0 +1,23 @@
+GITHUB_ACTION=crazy-maxghaction-dump-context
+GITHUB_ACTIONS=true
+GITHUB_ACTION_PATH=/home/runner/work/_actions/crazy-max/ghaction-dump-context/v1
+GITHUB_ACTOR=crazy-max
+GITHUB_API_URL=https://api.github.com
+GITHUB_BASE_REF=
+GITHUB_ENV=/home/runner/work/_temp/_runner_file_commands/set_env_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_EVENT_NAME=push
+#GITHUB_EVENT_PATH=/home/runner/work/_temp/_github_workflow/event.json
+GITHUB_GRAPHQL_URL=https://api.github.com/graphql
+GITHUB_HEAD_REF=
+GITHUB_JOB=event
+GITHUB_PATH=/home/runner/work/_temp/_runner_file_commands/add_path_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_REF=refs/tags/1.0dev4
+GITHUB_REPOSITORY=crazy-max/test-docker-action
+GITHUB_REPOSITORY_OWNER=crazy-max
+GITHUB_RETENTION_DAYS=90
+GITHUB_RUN_ID=325968230
+GITHUB_RUN_NUMBER=4
+GITHUB_SERVER_URL=https://github.com
+GITHUB_SHA=90dd6032fac8bda1b6c4436a2e65de27961ed071
+GITHUB_WORKFLOW=event
+GITHUB_WORKSPACE=/home/runner/work/test-docker-action/test-docker-action
--- a/tests/fixtures/event_tag_1.1beta2.env
+++ b/tests/fixtures/event_tag_1.1beta2.env
@ -0,0 +1,23 @@
+GITHUB_ACTION=crazy-maxghaction-dump-context
+GITHUB_ACTIONS=true
+GITHUB_ACTION_PATH=/home/runner/work/_actions/crazy-max/ghaction-dump-context/v1
+GITHUB_ACTOR=crazy-max
+GITHUB_API_URL=https://api.github.com
+GITHUB_BASE_REF=
+GITHUB_ENV=/home/runner/work/_temp/_runner_file_commands/set_env_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_EVENT_NAME=push
+#GITHUB_EVENT_PATH=/home/runner/work/_temp/_github_workflow/event.json
+GITHUB_GRAPHQL_URL=https://api.github.com/graphql
+GITHUB_HEAD_REF=
+GITHUB_JOB=event
+GITHUB_PATH=/home/runner/work/_temp/_runner_file_commands/add_path_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_REF=refs/tags/1.1beta2
+GITHUB_REPOSITORY=crazy-max/test-docker-action
+GITHUB_REPOSITORY_OWNER=crazy-max
+GITHUB_RETENTION_DAYS=90
+GITHUB_RUN_ID=325968230
+GITHUB_RUN_NUMBER=4
+GITHUB_SERVER_URL=https://github.com
+GITHUB_SHA=90dd6032fac8bda1b6c4436a2e65de27961ed071
+GITHUB_WORKFLOW=event
+GITHUB_WORKSPACE=/home/runner/work/test-docker-action/test-docker-action
--- a/tests/fixtures/event_tag_1.2.3rc2.env
+++ b/tests/fixtures/event_tag_1.2.3rc2.env
@ -0,0 +1,23 @@
+GITHUB_ACTION=crazy-maxghaction-dump-context
+GITHUB_ACTIONS=true
+GITHUB_ACTION_PATH=/home/runner/work/_actions/crazy-max/ghaction-dump-context/v1
+GITHUB_ACTOR=crazy-max
+GITHUB_API_URL=https://api.github.com
+GITHUB_BASE_REF=
+GITHUB_ENV=/home/runner/work/_temp/_runner_file_commands/set_env_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_EVENT_NAME=push
+#GITHUB_EVENT_PATH=/home/runner/work/_temp/_github_workflow/event.json
+GITHUB_GRAPHQL_URL=https://api.github.com/graphql
+GITHUB_HEAD_REF=
+GITHUB_JOB=event
+GITHUB_PATH=/home/runner/work/_temp/_runner_file_commands/add_path_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_REF=refs/tags/1.2.3rc2
+GITHUB_REPOSITORY=crazy-max/test-docker-action
+GITHUB_REPOSITORY_OWNER=crazy-max
+GITHUB_RETENTION_DAYS=90
+GITHUB_RUN_ID=325968230
+GITHUB_RUN_NUMBER=4
+GITHUB_SERVER_URL=https://github.com
+GITHUB_SHA=90dd6032fac8bda1b6c4436a2e65de27961ed071
+GITHUB_WORKFLOW=event
+GITHUB_WORKSPACE=/home/runner/work/test-docker-action/test-docker-action
--- a/tests/fixtures/event_tag_1.2.env
+++ b/tests/fixtures/event_tag_1.2.env
@ -0,0 +1,23 @@
+GITHUB_ACTION=crazy-maxghaction-dump-context
+GITHUB_ACTIONS=true
+GITHUB_ACTION_PATH=/home/runner/work/_actions/crazy-max/ghaction-dump-context/v1
+GITHUB_ACTOR=crazy-max
+GITHUB_API_URL=https://api.github.com
+GITHUB_BASE_REF=
+GITHUB_ENV=/home/runner/work/_temp/_runner_file_commands/set_env_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_EVENT_NAME=push
+#GITHUB_EVENT_PATH=/home/runner/work/_temp/_github_workflow/event.json
+GITHUB_GRAPHQL_URL=https://api.github.com/graphql
+GITHUB_HEAD_REF=
+GITHUB_JOB=event
+GITHUB_PATH=/home/runner/work/_temp/_runner_file_commands/add_path_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_REF=refs/tags/1.2
+GITHUB_REPOSITORY=crazy-max/test-docker-action
+GITHUB_REPOSITORY_OWNER=crazy-max
+GITHUB_RETENTION_DAYS=90
+GITHUB_RUN_ID=325968230
+GITHUB_RUN_NUMBER=4
+GITHUB_SERVER_URL=https://github.com
+GITHUB_SHA=90dd6032fac8bda1b6c4436a2e65de27961ed071
+GITHUB_WORKFLOW=event
+GITHUB_WORKSPACE=/home/runner/work/test-docker-action/test-docker-action
--- a/tests/fixtures/event_tag_1.2post1.env
+++ b/tests/fixtures/event_tag_1.2post1.env
@ -0,0 +1,23 @@
+GITHUB_ACTION=crazy-maxghaction-dump-context
+GITHUB_ACTIONS=true
+GITHUB_ACTION_PATH=/home/runner/work/_actions/crazy-max/ghaction-dump-context/v1
+GITHUB_ACTOR=crazy-max
+GITHUB_API_URL=https://api.github.com
+GITHUB_BASE_REF=
+GITHUB_ENV=/home/runner/work/_temp/_runner_file_commands/set_env_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_EVENT_NAME=push
+#GITHUB_EVENT_PATH=/home/runner/work/_temp/_github_workflow/event.json
+GITHUB_GRAPHQL_URL=https://api.github.com/graphql
+GITHUB_HEAD_REF=
+GITHUB_JOB=event
+GITHUB_PATH=/home/runner/work/_temp/_runner_file_commands/add_path_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_REF=refs/tags/1.2post1
+GITHUB_REPOSITORY=crazy-max/test-docker-action
+GITHUB_REPOSITORY_OWNER=crazy-max
+GITHUB_RETENTION_DAYS=90
+GITHUB_RUN_ID=325968230
+GITHUB_RUN_NUMBER=4
+GITHUB_SERVER_URL=https://github.com
+GITHUB_SHA=90dd6032fac8bda1b6c4436a2e65de27961ed071
+GITHUB_WORKFLOW=event
+GITHUB_WORKSPACE=/home/runner/work/test-docker-action/test-docker-action
--- a/tests/meta.test.ts
+++ b/tests/meta.test.ts
@ -443,6 +443,7 @@ describe('push', () => {
        images: ['org/app', 'ghcr.io/user/app'],
        tags: [
          `type=semver,pattern={{version}}`,
+          `type=pep440,pattern={{version}}`,
          `type=edge`
        ],
      } as Inputs,
@ -503,6 +504,7 @@ describe('push', () => {
        images: ['user/app'],
        tags: [
          `type=semver,pattern={{version}},value=v1.2.3`,
+          `type=pep440,pattern={{version}},value=v1.2.3`,
          `type=edge`
        ],
      } as Inputs,
@ -1373,6 +1375,262 @@ describe('tag', () => {
        "org.opencontainers.image.licenses=MIT"
      ]
    ],
+    [
+      'tag23',
+      'event_tag_v1.1.1.env',
+      {
+        images: ['org/app'],
+        tags: [
+          `type=pep440,pattern={{version}}`,
+          `type=pep440,pattern={{major}}.{{minor}}`,
+          `type=pep440,pattern={{major}}`
+        ]
+      } as Inputs,
+      {
+        main: '1.1.1',
+        partial: ['1.1', '1'],
+        latest: true
+      } as Version,
+      [
+        'org/app:1.1.1',
+        'org/app:1.1',
+        'org/app:1',
+        'org/app:latest'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.1.1",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag24',
+      'event_tag_1.2.env',
+      {
+        images: ['org/app'],
+        tags: [
+          `type=pep440,pattern={{version}}`,
+          `type=pep440,pattern={{major}}.{{minor}}`
+        ]
+      } as Inputs,
+      {
+        main: '1.2',
+        partial: [],
+        latest: true
+      } as Version,
+      [
+        'org/app:1.2',
+        'org/app:latest',
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.2",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag25',
+      'event_tag_1.1beta2.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=pep440,pattern={{major}}.{{minor}}`,
+          `type=pep440,pattern={{major}}`
+        ]
+      } as Inputs,
+      {
+        main: '1.1b2',
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'org/app:1.1b2',
+        'ghcr.io/user/app:1.1b2'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.1b2",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag26',
+      'event_tag_1.0dev4.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=pep440,pattern={{major}}.{{minor}}`,
+          `type=pep440,pattern={{major}}`
+        ]
+      } as Inputs,
+      {
+        main: '1.0.dev4',
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'org/app:1.0.dev4',
+        'ghcr.io/user/app:1.0.dev4'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.0.dev4",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag27',
+      'event_tag_1.2.3rc2.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=pep440,pattern={{raw}}`,
+          `type=pep440,pattern={{version}}`,
+          `type=pep440,pattern={{major}}.{{minor}}`,
+          `type=pep440,pattern={{major}}`
+        ]
+      } as Inputs,
+      {
+        main: '1.2.3rc2',
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'org/app:1.2.3rc2',
+        'ghcr.io/user/app:1.2.3rc2'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.2.3rc2",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag28',
+      'event_tag_v1.1.1.env',
+      {
+        images: ['org/app'],
+        tags: [
+          `type=pep440,pattern={{version}}`,
+          `type=pep440,pattern={{major}}.{{minor}}.{{patch}}`,
+          `type=pep440,pattern={{major}}.{{minor}}`,
+          `type=pep440,pattern={{major}}`
+        ]
+      } as Inputs,
+      {
+        main: '1.1.1',
+        partial: [
+          "1.1",
+          "1"
+        ],
+        latest: true
+      } as Version,
+      [
+        'org/app:1.1.1',
+        'org/app:1.1',
+        'org/app:1',
+        'org/app:latest'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.1.1",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag29',
+      'event_tag_1.2post1.env',
+      {
+        images: ['org/app'],
+        tags: [
+          `type=pep440,pattern={{version}}`,
+          `type=pep440,pattern={{major}}.{{minor}}`,
+          `type=pep440,pattern={{major}}`
+        ]
+      } as Inputs,
+      {
+        main: '1.2.post1',
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'org/app:1.2.post1'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.2.post1",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag30',
+      'event_tag_sometag.env',
+      {
+        images: ['ghcr.io/user/app'],
+        tags: [
+          `type=ref,event=tag`,
+          `type=pep440,pattern={{version}}`,
+          `type=pep440,pattern={{major}}.{{minor}}`,
+          `type=pep440,pattern={{major}}`
+        ],
+        flavor: [
+          `latest=false`
+        ]
+      } as Inputs,
+      {
+        main: 'sometag',
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'ghcr.io/user/app:sometag'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=sometag",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
  ])('given %p with %p event', tagsLabelsTest);
 });

--- a/codecov.yml
+++ b/codecov.yml
@ -0,0 +1,3 @@
+comment: false
+github_checks:
+  annotations: false
--- a/dist/index.js
+++ b/dist/index.js
--- a/package.json
+++ b/package.json
@ -31,6 +31,7 @@
  "dependencies": {
    "@actions/core": "^1.4.0",
    "@actions/github": "^5.0.0",
+    "@renovate/pep440": "^1.0.0",
    "csv-parse": "^4.16.0",
    "handlebars": "^4.7.7",
    "moment": "^2.29.1",
--- a/src/meta.ts
+++ b/src/meta.ts
@ -2,6 +2,7 @@ import * as handlebars from 'handlebars';
 import * as fs from 'fs';
 import * as path from 'path';
 import moment from 'moment';
+import * as pep440 from '@renovate/pep440';
 import * as semver from 'semver';
 import {Inputs, tmpDir} from './context';
 import {ReposGetResponseData} from './github';
@ -62,6 +63,10 @@ export class Meta {
          version = this.procSemver(version, tag);
          break;
        }
+        case tcl.Type.Pep440: {
+          version = this.procPep440(version, tag);
+          break;
+        }
        case tcl.Type.Match: {
          version = this.procMatch(version, tag);
          break;
@ -147,6 +152,53 @@ export class Meta {
    return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? latest : this.flavor.latest == 'true');
  }

+  private procPep440(version: Version, tag: tcl.Tag): Version {
+    if (!/^refs\/tags\//.test(this.context.ref) && tag.attrs['value'].length == 0) {
+      return version;
+    }
+
+    let vraw: string;
+    if (tag.attrs['value'].length > 0) {
+      vraw = this.setGlobalExp(tag.attrs['value']);
+    } else {
+      vraw = this.context.ref.replace(/^refs\/tags\//g, '').replace(/\//g, '-');
+    }
+    if (!pep440.valid(vraw)) {
+      core.warning(`${vraw} does not conform to PEP 440. More info: https://www.python.org/dev/peps/pep-0440`);
+      return version;
+    }
+
+    let latest: boolean = false;
+    const pver = pep440.explain(vraw);
+    if (pver.is_prerelease || pver.is_postrelease || pver.is_devrelease) {
+      vraw = this.setValue(pep440.clean(vraw), tag);
+    } else {
+      vraw = this.setValue(
+        handlebars.compile(tag.attrs['pattern'])({
+          raw: function () {
+            return vraw;
+          },
+          version: function () {
+            return pep440.clean(vraw);
+          },
+          major: function () {
+            return pep440.major(vraw);
+          },
+          minor: function () {
+            return pep440.minor(vraw);
+          },
+          patch: function () {
+            return pep440.patch(vraw);
+          }
+        }),
+        tag
+      );
+      latest = true;
+    }
+
+    return Meta.setVersion(version, vraw, this.flavor.latest == 'auto' ? latest : this.flavor.latest == 'true');
+  }
+
  private procMatch(version: Version, tag: tcl.Tag): Version {
    if (!/^refs\/tags\//.test(this.context.ref) && tag.attrs['value'].length == 0) {
      return version;
--- a/src/pep440.d.ts
+++ b/src/pep440.d.ts
@ -0,0 +1,39 @@
+interface ExplainedVersion {
+  epoch: number;
+  release: [number, number, number];
+  pre?: [string, number];
+  post?: number;
+  dev?: number;
+  local?: string;
+  public: string;
+  base_version: string;
+  is_prerelease: boolean;
+  is_devrelease: boolean;
+  is_postrelease: boolean;
+}
+
+interface Version {
+  epoch: number;
+  release: [number, number, number];
+  pre?: [string, number] | null;
+  post?: [string, number] | null;
+  dev?: [string, number] | null;
+  local?: Array<number> | null;
+  public: string;
+  base_version: string;
+}
+
+declare module '@renovate/pep440' {
+  function valid(version: string): string | null;
+  function clean(version: string): string;
+  function explain(version: string): ExplainedVersion;
+  function major(input: string): string;
+  function minor(input: string): string;
+  function patch(input: string): string;
+  function inc(input: string, release: string, preReleaseIdentifier?: string): string;
+}
+
+declare module '@renovate/pep440/lib/version' {
+  function stringify(parsed: Version): string;
+  function parse(version: string): Version;
+}
--- a/src/tag.ts
+++ b/src/tag.ts
@ -4,6 +4,7 @@ import * as core from '@actions/core';
 export enum Type {
  Schedule = 'schedule',
  Semver = 'semver',
+  Pep440 = 'pep440',
  Match = 'match',
  Edge = 'edge',
  Ref = 'ref',
@ -42,6 +43,7 @@ export class Tag {
 export const DefaultPriorities: Record<Type, string> = {
  [Type.Schedule]: '1000',
  [Type.Semver]: '900',
+  [Type.Pep440]: '900',
  [Type.Match]: '800',
  [Type.Edge]: '700',
  [Type.Ref]: '600',
@ -124,7 +126,8 @@ export function Parse(s: string): Tag {
      }
      break;
    }
-    case Type.Semver: {
+    case Type.Semver:
+    case Type.Pep440: {
      if (!tag.attrs.hasOwnProperty('pattern')) {
        throw new Error(`Missing pattern attribute for ${s}`);
      }
--- a/yarn.lock
+++ b/yarn.lock
@ -248,6 +248,14 @@
  dependencies:
    "@babel/helper-plugin-utils" "^7.8.0"

+"@babel/runtime-corejs3@^7.12.1":
+  version "7.14.7"
+  resolved "https://registry.yarnpkg.com/@babel/runtime-corejs3/-/runtime-corejs3-7.14.7.tgz#0ef292bbce40ca00f874c9724ef175a12476465c"
+  integrity sha512-Wvzcw4mBYbTagyBVZpAJWI06auSIj033T/yNE0Zn1xcup83MieCddZA7ls3kme17L4NOGBrQ09Q+nKB41RLWBA==
+  dependencies:
+    core-js-pure "^3.15.0"
+    regenerator-runtime "^0.13.4"
+
 "@babel/template@^7.10.4", "@babel/template@^7.3.3":
  version "7.10.4"
  resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.10.4.tgz#3251996c4200ebc71d1a8fc405fba940f36ba278"
@ -602,6 +610,13 @@
  dependencies:
    "@octokit/openapi-types" "^7.2.0"

+"@renovate/pep440@^1.0.0":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@renovate/pep440/-/pep440-1.0.0.tgz#9e05cac649b6a3d027cba7f2939b085de78f39ea"
+  integrity sha512-k3pZVxGEGpU7rpH507/9vxfFjuxX7qx4MSj9Fk+6zBsf/uZmAy8x97dNtZacbge7gP9TazbW1d7SEb5vsOmKlw==
+  dependencies:
+    xregexp "4.4.1"
+
 "@sinonjs/commons@^1.7.0":
  version "1.8.1"
  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.1.tgz#e7df00f98a203324f6dc7cc606cad9d4a8ab2217"
@ -1168,6 +1183,11 @@ copy-descriptor@^0.1.0:
  resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
  integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=

+core-js-pure@^3.15.0:
+  version "3.15.2"
+  resolved "https://registry.yarnpkg.com/core-js-pure/-/core-js-pure-3.15.2.tgz#c8e0874822705f3385d3197af9348f7c9ae2e3ce"
+  integrity sha512-D42L7RYh1J2grW8ttxoY1+17Y4wXZeKe7uyplAI3FkNQyI5OgBIAjUfFiTPfL1rs0qLpxaabITNbjKl1Sp82tA==
+
 core-util-is@1.0.2:
  version "1.0.2"
  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
@ -3043,6 +3063,11 @@ read-pkg@^5.2.0:
    parse-json "^5.0.0"
    type-fest "^0.6.0"

+regenerator-runtime@^0.13.4:
+  version "0.13.7"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz#cac2dacc8a1ea675feaabaeb8ae833898ae46f55"
+  integrity sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew==
+
 regex-not@^1.0.0, regex-not@^1.0.2:
  version "1.0.2"
  resolved "https://registry.yarnpkg.com/regex-not/-/regex-not-1.0.2.tgz#1f4ece27e00b0b65e0247a6810e6a85d83a5752c"
@ -3851,6 +3876,13 @@ xmlchars@^2.2.0:
  resolved "https://registry.yarnpkg.com/xmlchars/-/xmlchars-2.2.0.tgz#060fe1bcb7f9c76fe2a17db86a9bc3ab894210cb"
  integrity sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==

+xregexp@4.4.1:
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/xregexp/-/xregexp-4.4.1.tgz#c84a88fa79e9ab18ca543959712094492185fe65"
+  integrity sha512-2u9HwfadaJaY9zHtRRnH6BY6CQVNQKkYm3oLtC9gJXXzfsbACg5X5e4EZZGVAH+YIfa+QA9lsFQTTe3HURF3ag==
+  dependencies:
+    "@babel/runtime-corejs3" "^7.12.1"
+
 y18n@^4.0.0:
  version "4.0.1"
  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.1.tgz#8db2b83c31c5d75099bb890b23f3094891e247d4"