Migrate to charmhub handling

build-requirements.txt

@@ -1 +1,7 @@
-git+https://github.com/canonical/charmcraft.git@0.10.2#egg=charmcraft
+# NOTES(lourot):
+# * We don't install charmcraft via pip anymore because it anyway spins up a
+#   container and scp the system's charmcraft snap inside it. So the charmcraft
+#   snap is necessary on the system anyway.
+# * `tox -e build` successfully validated with charmcraft 1.2.1
+
+cffi==1.14.6; python_version < '3.6'  # cffi 1.15.0 drops support for py35.

charmcraft.yaml

@@ -0,0 +1,26 @@
+type: charm
+
+parts:
+  charm:
+    after:
+      - update-certificates
+    charm-python-packages:
+      # NOTE(lourot): see
+      # * https://github.com/canonical/charmcraft/issues/551
+      # * https://github.com/canonical/charmcraft/issues/632
+      - setuptools < 58
+    build-packages:
+      - git
+
+  update-certificates:
+    plugin: nil
+    # See https://github.com/canonical/charmcraft/issues/658
+    override-build: |
+      apt update
+      apt install -y ca-certificates
+      update-ca-certificates
+bases:
+  - name: ubuntu
+    channel: "20.04"
+    architectures:
+      - amd64

osci.yaml

@@ -12,6 +12,7 @@
     name: focal-pacific
     parent: func-target
     dependencies:
+      charm-build
       - osci-lint
       - tox-py35
       - tox-py36
@@ -19,3 +20,15 @@
       - tox-py38
     vars:
       tox_extra_args: focal-pacific
+- job:
+    name: focal-quincy
+    parent: func-target
+    dependencies:
+      - charm-build
+      - osci-lint
+      - tox-py35
+      - tox-py36
+      - tox-py37
+      - tox-py38
+    vars:
+      tox_extra_args: focal-quincy

rename.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+charm=$(grep "charm_build_name" osci.yaml | awk '{print $2}')
+echo "renaming ${charm}_*.charm to ${charm}.charm"
+echo -n "pwd: "
+pwd
+ls -al
+echo "Removing bad downloaded charm maybe?"
+if [[ -e "${charm}.charm" ]];
+then
+    rm "${charm}.charm"
+fi
+echo "Renaming charm here."
+mv ${charm}_*.charm ${charm}.charm

tox.ini

@@ -15,8 +15,12 @@ skip_missing_interpreters = False
 # * It is also necessary to pin virtualenv as a newer virtualenv would still
 #   lead to fetching the latest pip in the func* tox targets, see
 #   https://stackoverflow.com/a/38133283
+# * It is necessary to declare setuptools as a dependency otherwise tox will
+#   fail very early at not being able to load it. The version pinning is in
+#   line with `pip.sh`.
 requires = pip < 20.3
            virtualenv < 20.0
+           setuptools < 50.0.0
 # NOTE: https://wiki.canonical.com/engineering/OpenStack/InstallLatestToxOnOsci
 minversion = 3.2.0
 
@@ -27,10 +31,12 @@ setenv = VIRTUAL_ENV={envdir}
 install_command =
   pip install {opts} {packages}
 commands = stestr run --slowest {posargs}
-whitelist_externals =
+allowlist_externals =
     git
     add-to-archive.py
     bash
+    charmcraft
+    rename.sh
 passenv = HOME TERM CS_* OS_* TEST_*
 deps = -r{toxinidir}/test-requirements.txt
 
@@ -54,6 +60,11 @@ basepython = python3.8
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 
+[testenv:py39]
+basepython = python3.9
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+
 [testenv:py3]
 basepython = python3
 deps = -r{toxinidir}/requirements.txt
@@ -101,7 +112,9 @@ commands = {posargs}
 basepython = python3
 deps = -r{toxinidir}/build-requirements.txt
 commands =
-    charmcraft build
+    charmcraft clean
+    charmcraft -v build
+    {toxinidir}/rename.sh
 
 [testenv:func-noop]
 basepython = python3
@@ -130,4 +143,4 @@ commands =
 
 [flake8]
 # Ignore E902 because the unit_tests directory is missing in the built charm.
-ignore = E402,E226,E902,W504
+ignore = E402,E226,E902