option to manually override "reusing artifact" mechanism

[christophprokop]

goal: quicker iterations while putting together a new build script

current situation: if the top level pkg.toml was modified no reuse is possible for the next submit this can be pretty annoying and time consuming if one or more dependencies take a long time to build

feature request: if you know what you are doing (TM) you should be able to manually force a reuse of artifacts in a certain staging directory

[matthiasbeyer]

Why is it annoying that the build takes long?

Anything that happens after a successful build should be happen automatically anyways, so I'd suggest to rather add more functionality to auto-release after a build finished than adding loopholes that one can (and will!) use to screw up things.

Especially if the top script was changed, rebuilding everything should happen anyways.

[christophprokop]

Maybe i was not specific enough. I don't want t speed up the build of a working build script, but while editing a not yet existing script. Also rebuilding all packages (e.g. nightly) could help to avoid "things get screwed up"

Also: this issue might be related to #3.

[christophprokop]

the "reuse artifact" mechanism seems to work fine (no more unexpected rebuilds) (just like #145)