share: introduce config option to store requires in .hg/store
This introduces a config option which enabled stores the requirements on a
repository in store instead.
When enabled, `.hg/requires` will contain the `share-safe` requirement which
marks that the requirements are present in the store.
This is done so that repository requirements can be shared with shares made
using `hg share` command.
After this patch, `hg share` checks whether the source repository has
share-safe requirement, if yes, it does not copy the requirements.
Test for the new functionality is added and a test case in exitsing share tests
is also added.
Differential Revision: https://phab.mercurial-scm.org/D8633
setup
$ cat >> $HGRCPATH <<EOF
> [extensions]
> share =
> [format]
> exp-share-safe = True
> EOF
prepare source repo
$ hg init source
$ cd source
$ cat .hg/requires
exp-sharesafe
$ cat .hg/store/requires
dotencode
fncache
generaldelta
revlogv1
sparserevlog
store
$ hg debugrequirements
dotencode
exp-sharesafe
fncache
generaldelta
revlogv1
sparserevlog
store
$ echo a > a
$ hg ci -Aqm "added a"
$ echo b > b
$ hg ci -Aqm "added b"
$ cd ..
Create a shared repo and check the requirements are shared and read correctly
$ hg share source shared1
updating working directory
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd shared1
$ cat .hg/requires
exp-sharesafe
shared
$ hg debugrequirements -R ../source
dotencode
exp-sharesafe
fncache
generaldelta
revlogv1
sparserevlog
store
$ hg debugrequirements
dotencode
exp-sharesafe
fncache
generaldelta
revlogv1
shared
sparserevlog
store
$ echo c > c
$ hg ci -Aqm "added c"
$ hg unshare