-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2015-04-29 10:43 AM, roger peppe wrote: >> Once Trusty EOLs, then I think we would be able to drop >> functionality that 1.18 itself used only for migration. >> >> For example, if juju 1.18 had automatically created .jenvs from >> the environments.yaml instead of using environments.yaml >> directly, then when Trusty EOLed, we could drop that >> functionality. > > OK, this is interesting. So if we do actually want to get rid of > this feature, the steps would go something like: > > - implement code in current juju-core so that when the juju command > needs an environment and the .jenv file doesn't exist, the .jenv > file is created. > > - release that code as part of Ubuntu 16.04 Juju. > > - for the 21.04 release (when we no longer support 16.04 support), > we can remove the fallback feature. > > Is that about right?
Yes, I think so. > Or is even that not possible, because the automatic .jenv creation > is a feature in itself that must be maintained? As long as nothing that comes out of $SERIES-updates contains a change that stops things from working that previously worked, I would be content. IOW, I think migrations are a special case. > Out of interest, how does this apply to command-line flag > compatibility, where there's no possible automatic migration? There's no wiggle room. As William said, "if you're removing or changing an API, or removing or changing the meaning of a command line flag, you are Doing It Wrong." Aaron -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJVQQJnAAoJEK84cMOcf+9hI/0IALneo7jxfiPzy7Sw5xvDlIiV yFJ/MMoYvuSPzniC8WCOeBabCw8tdLOR2CFmyv8llmNk9XsmBtB73OH8cztRho5V v7cAw2slAaZhBxynARvXls7r/+jaI5BI/6cccojYYYoslMroRwFG/YZT1pVwHCgt eZOXSQ1xRX+6ZkkcFL7D8deLeaGAtgesV8gOP7kw1hqPGGXdJCQgMkJ+vxMt5XH9 93QGU0onP3u7rs/Yy6wvSPafsO3e0yu7oRAQ23yJjfFT0CgbA0APN6qi4i2orfhu RbS6sYZmRaOca0W8dvRsKkcGgNTwJ0VUxbTrfcOWtt2u46MHnPF9Di+IioQFxIk= =oYGu -----END PGP SIGNATURE----- -- Juju-dev mailing list Juju-dev@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/juju-dev
