Building with charm version 3.x does not install on bionic (Python >=3.7 is required, 3.6.9 is present)
Metadata
Current evaluation
Closed as not a charmcraft bug: the 22.04-build/18.04-run config was invalid (OS Python 3.6.9 < 3.7), and the bionic build break was an upstream charm-tools 3.x regression fixed in juju/charm-tools#641; broader fix tracked in #878.
Resolution: closed not a bug
Reason: Maintainer facundobatista closed it on 2022-10-12 stating the original report had a wrong config (building on jammy for bionic/focal run-on) while the bionic build failure was fixed upstream in charm-tools (juju/charm-tools#641), and that remaining charmcraft-side work is tracked in #878.
Evaluated by: mr-cal-bot
No scores available.
Issue body
When we pack with charm 3.x does not install on bionic
[Running functional tests with 3.x:](https://pastebin.ubuntu.com/p/ZyKf6V2hFg/)
```
type: charm
parts:
charm:
source: src
plugin: reactive
build-snaps:
- charm
bases:
- build-on:
- name: ubuntu
channel: "22.04"
architectures: ["amd64"]
run-on:
- name: ubuntu
channel: "22.04"
architectures:
- amd64
- name: ubuntu
channel: "20.04"
architectures:
- amd64
- name: ubuntu
channel: "18.04"
architectures:
- amd64
```
[Running functional tests with 2.x:](https://pastebin.ubuntu.com/p/6nJVMzJZDN/)
```
type: charm
parts:
charm:
source: src
plugin: reactive
build-snaps:
- charm/2.x/stable
bases:
- build-on:
- name: ubuntu
channel: "22.04"
architectures: ["amd64"]
run-on:
- name: ubuntu
channel: "22.04"
architectures:
- amd64
- name: ubuntu
channel: "20.04"
architectures:
- amd64
- name: ubuntu
channel: "18.04"
architectures:
- amd64
```
created a demo branch for easy tesing:
```
git clone -b charmcraft-bionic-bug https://git.launchpad.net/~esunar/charm-graylog
make charm3 #fails
make charm2 #sucess
```
Evaluation history
| Date | Model | Scores | Action | Summary |
|---|---|---|---|---|
| stealth/space-bunny-alpha | — | closed not a bug | Closed as not a charmcraft bug: the 22.04-build/18.04-run config was invalid (OS Python 3.6.9 < 3.7), and the bionic build break was an upstream charm-tools 3.x regression fixed in juju/charm-tools#641; broader fix tracked in #878. | |
| stealth/space-bunny-alpha | — | closed not a bug | Closed as not a charmcraft bug: the install failure was user config (building on Jammy for bionic target); the genuine bionic build break was fixed upstream in juju/charm-tools#641. Broader build-packages fix tracked in #878. | |
| stealth/space-bunny-alpha | — | closed resolved | Charm 3.x builds on Bionic were fixed upstream in juju/charm-tools#641. The separate Python mismatch resulted from building on Jammy for an Ubuntu 18.04 target. | |
| stealth/space-bunny-alpha | — | closed resolved | Charmcraft 3.x failed to build on Bionic because of charm-tools; fixed upstream by juju/charm-tools#641. Broader packaging work is tracked in charmcraft#878. | |
| qwen3.6-35b-a3b-mtp-q6 | — | — | Closed as invalid. The Python version error stemmed from a misconfigured build environment. The underlying charm-tools failure was fixed upstream in juju/charm-tools#641. Broader packaging improvements are tracked in #878. | |
| qwen/qwen3.6-35b-a3b | — | — | Closed as resolved. The failure originated from an incorrect build configuration. The underlying charm-tools 3.x bionic compatibility issue was fixed in juju/charm-tools#641. Broader packaging improvements are tracked in #878. | |
| qwen3.6-35b-a3b-mtp-q6 | — | — | Closed as resolved. Initial failure stemmed from a misconfigured bases setup. Subsequent bionic build failures were fixed upstream in juju/charm-tools#641. Broader improvements are tracked in issue #878. |
Update history
No update history recorded yet.
Related work
-
Related To:
canonical/charmcraft#878
(confidence 90%)
Reactive plugin not populating charm-tools build packages; the maintainer pointed to it as the place for the remaining charmcraft-side improvement
-
Likely Fixed By:
charm-tools#641
(confidence 85%)
fnordahl cited this upstream charm-tools fix as resolving the bionic/18.04 build failure caused by the 2.x-to-3.x migration
Related issues
| Issue | Project | State | Summary | Similarity |
|---|---|---|---|---|
| #589 Unable to build a charm that deploys on xenial | charmcraft | closed | Not a charmcraft bug: the charm failed on xenial because ops 1.2.0 (the pinned latest release) broke on Python 3.5 (canonical/operator#517). Author confirmed building with the latest operator framework from git deploys fine. | |
| #2259 Builds fail for 20.04 (in some common circumstances) | charmcraft | closed | Fixed in canonical/charmcraft#2275 (commit 65d01ed5): charm builds now apply a bundled setuptools-scm constraint, avoiding the Python 3.8/3.9 all-source dependency cycle. |