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Remove core20 lifecycle

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Metadata

Project
snapcraft
Number
#5675
Type
issue
State
closed
Author
mr-cal
Labels
Status: Triaged Type: Cleanup
Created
Updated
Closed

Current evaluation

Merged PR #6019 via commit fa7952b4d, removing core20 build/lifecycle support and core20 command entries; core20 spread tests were removed separately in PR #6009.

Resolution: closed resolved

Reason: PR #6019 was merged as commit fa7952b4d, dropping core20 build support and removing core20 from relevant command entry points. PR #6009 separately removed the core20 spread tests.

Evaluated by: mr-cal-bot

No scores available.

Issue body

### What needs to get done - Add a user-friendly error recommending to use Snapcraft 8 and a link to https://documentation.ubuntu.com/snapcraft/stable/reference/bases/#base-snaps - Remove - all lifecycle commands that allow building core20 snaps - core20 spread tests - core20's presence in the `plugins`, `extensions`, and `expand-extensions` commands The scope of work doesn't include removing `snapcraft_legacy` and `tests/legacy/` wholesale. This is because there is some store-related code and commands that are still in use. This will be done in https://github.com/canonical/snapcraft/issues/5982. ### Why it needs to get done Core20 will be dropped in Snapcraft 9. Core20 snaps can still be build with Snapcraft 8.

Evaluation history

Date Model Scores Action Summary
stealth/space-bunny-alpha — closed resolved Merged PR #6019 via commit fa7952b4d, removing core20 build/lifecycle support and core20 command entries; core20 spread tests were removed separately in PR #6009.
stealth/space-bunny-alpha — closed resolved core20 lifecycle removal completed by merged PR #6019 (commit fa7952b4d, "chore!: drop core20"), which dropped core20 build commands, removed core20 from plugins/extensions/expand-extensions, and moved dropped entry points to snapcraft_legacy. Closed by maintainer comment "Completed in #6019".
stealth/space-bunny-alpha — closed resolved Core20 lifecycle support was removed in merged PR #6019 (commit fa7952b4d, "chore!: drop core20"), dropping core20 build commands and plugin/extension listings; spread tests were removed earlier in #6009 (d0f1b4394).
stealth/space-bunny-alpha — closed resolved Removed core20 lifecycle support via merged PR #6019 (fa7952b4d), including core20 build commands, spread tests, and plugin/extension listings; snapcraft_legacy removal remained out of scope.
qwen/qwen3.6-35b-a3b — — Merged in pull request #6019. Removed core20 lifecycle commands, spread tests, and plugin/extension references. Legacy components were retained for store compatibility. Prepares Snapcraft for version 9.
qwen/qwen3.6-35b-a3b — — Completed in PR #6019. Removed core20 lifecycle commands, spread tests, and plugin/extension references. Legacy code remains for store compatibility. Core20 support is fully deprecated ahead of Snapcraft 9.
qwen/qwen3.6-35b-a3b — — Completed in PR #6019. Removed core20 lifecycle commands, spread tests, and plugin/extension references. Added a user-friendly error directing users to Snapcraft 8 and base snap documentation. Legacy code was preserved for future cleanup.
qwen3.6-35b-a3b-mtp-q6 — — Merged via PR #6019. Removed core20 lifecycle commands, spread tests, and plugin/extension references to prepare for Snapcraft 9. Legacy code remains for store-related functionality.

Update history

No update history recorded yet.

Related work

  • Likely Fixed By: snapcraft#6019 (confidence 100%)

    Merged resolving PR, committed as fa7952b4d.

  • Related To: snapcraft#6009 (confidence 99%)

    Removed the core20 spread tests required by the cleanup.

  • Related To: snapcraft#5982 (confidence 90%)

    Follow-up for trimming snapcraft_legacy after retaining needed store functionality.

Related issues

Issue Project State Summary Similarity
#6009 test: remove core20 spread tests snapcraft merged Squash-merged PR #6009 as commit d0f1b4394, deleting core20 spread tests and migrating applicable ones to core22/core24 (+20 net tests). Unblocked core20 lifecycle removal for Snapcraft 9 (#5675).
81%
#3587 lifecycle: init with core20 (CRAFT-517) snapcraft merged PR #3587 updated lifecycle initialization to use core20 and merged into master as f91632aab (PR commit 0458b9c).
78%
#5198 Drop core18 extensions snapcraft closed Core18-only legacy extensions were removed by merged PR #6019, commit fa7952b4d, as part of dropping legacy core18/core20 support.
76%
#6019 chore!: drop core20 snapcraft merged Merged PR #6019 as fa7952b4d, removing core20 build support and moving dropped entry points to snapcraft_legacy; generic store commands remained for later migration.
76%
#4182 Add electron-builder test for core20 snapcraft open Requested core20 electron-builder spread coverage is obsolete: core20 support and related tests were removed in PRs #6019 and #6009, and core20 is now limited to the legacy Snapcraft 8.x track.
76%
#3620 Revert "lifecycle: do not stage deps for pull on core20" snapcraft merged PR #3620 by sergiusens merged as4c23512f4 (merge cfb8ec3f5), reverting commit f30701a8c "lifecycle: do not stage deps for pull on core20" which broke core20 PULL builds in 6.0.1.
75%
#4177 core18: removal snapcraft merged Merged PR snapcore/snapcraft#4177 (May 2023) dropped core18 base support and its unit/spread tests, fixing #4165 via commits 40136ea9b, 77edc734b and ed423b6a8; core18 was EOL.
73%
#3610 lifecycle: do not stage deps for pull on core20 (CRAFT-725) snapcraft merged Merged as f30701a8c to skip dependency staging during core20 pulls, then reverted by #3620 after PULL build failures; #3622 replaced it with build-attributes-controlled behavior.
73%
#2854 Core20 snapcraft closed PR #2854 was closed unmerged because core20 enablement was handled by PluginV2; none of the proposed changes were merged.
73%
#3384 Add core20 to various /Dockerfile/s snapcraft closed Closed unmerged in favor of #2673; the broader Docker OS/risk parameterization (commit b982555e1) replaced the proposed core20-specific changes, with CI and separate image-tag publication still required.
72%