Since the build is reproducible, it should not matter when it was built. If you want to trace a build back to its source, there are much better ways than a timestamp.
I’m not, but I really think I should be. As in, there should be a thing that saves the state of the tree every time I type `make`, without any thought on my part.
This is (assuming Git—or Mercurial, or another feature-equivalent VCS) not hard in theory: just take your tree’s current state and put it somewhere, like in a merge commit to refs/compiles/master if you’re on refs/heads/master, or in the reflog for a special “stash”-like “compiles” ref, or whatever you like.
The reason I’m not doing it already is that, as far as I can tell, Git makes it stupendously hard to take a dirty working tree and index, do some Git to them (as opposed to a second worktree using the same gitdir), then put things back exactly as they were. I mean, that’s what `git stash` is supposed to do, right?.. Except if you don’t have anything staged then (sometimes?..) after `git stash pop` everything goes staged; and if you’ve added new files with `git add -N` then `git stash` will either refuse to work, or succeed but in such a way that a later `git stash pop` will not mark these files staged (or that might be the behaviour for plain `git add` on new files?). Gods help you if you have dirty submodules, or a merge conflict you’ve fixed but forgot to actually commit.
My point is, this sounds like a problem somebody’s bound to have solved by now. Does anyone have any pointers? As things are now, I take a look at it every so often, then remember or rediscover the abovementioned awfulness and give up. (Similarly for making precommit hooks run against the correct tree state when not all changes are being committed.)
Eg
git commit -am “Starting work on this important feature”
# make some changes
git add . && git commit —-squash “I made a change” HEAD
You can also use `git reset —-soft $BRANCH_OR_COMITTISH` to go back to an earlier commit but leave all changes (except maybe new files? Sigh) staged.
You also might check out `git reflog` to find commits you might’ve orphaned.