HEADS-UP: Git submodule conversion imminent

[Simon Peyton Jones]

Thank you Herbert!

Did you follow up with more specific instructions?

In particular, 
- how do I bring an existing clean tree up to date?
- if I have a tree with a bunch of as-yet-unpushed commits, what do I do?

Thanks

Simon

| -----Original Message-----
| From: ghc-devs [mailto:ghc-devs-bounces at haskell.org] On Behalf Of Herbert
| Valerio Riedel
| Sent: 25 June 2014 08:47
| To: ghc-devs
| Subject: HEADS-UP: Git submodule conversion imminent
| 
| Hello GHC Devs!
| 
| In order to not drag this out any longer, I'll completing the submodule
| conversion in the next few hours by converting the remaining sub-repo
| packages into proper submodules.
| 
| This is represents phase 1 of the reorganization (phase 2 comprises
| officially transitioning the push-urls of *some* the packages to
| github.com/haskell as happened with haddock). However, this phase 1 is
| important to get done early (ideally half a year ago) in order to make
| 'ghc-complete' bit more redundant (I hope Joachim doesn't mind... :-) )
| and allow to properly 'git bisect' as far back as possible into the
| past.
| 
| While the workflow changes[1] to additionally have the sub-repo change
| also
| registed in ghc.git, practically, this should affect only a minority of
| you, as the remaining packages (see list at the bottom of this mail) to
| be
| converted into submodules are modified *very* seldom.
| 
| This will be similiar to the conversion of haddock.git into a proper
| submodule of which you read up in
| 
|  * <http://permalink.gmane.org/gmane.comp.lang.haskell.ghc.devel/4049>
|  * <http://permalink.gmane.org/gmane.comp.lang.haskell.ghc.devel/4072>
|  * <http://permalink.gmane.org/gmane.comp.lang.haskell.ghc.devel/4077>
| 
| List of packages converted into proper submodules:
| 
|  * libffi-tarballs             libffi-tarballs.git
|  * utils/hsc2hs                hsc2hs.git
|  * libraries/array             packages/array.git
|  * libraries/deepseq           packages/deepseq.git
|  * libraries/directory         packages/directory.git
|  * libraries/filepath          packages/filepath.git
|  * libraries/haskell98         packages/haskell98.git
|  * libraries/haskell2010       packages/haskell2010.git
|  * libraries/hoopl             packages/hoopl.git
|  * libraries/hpc               packages/hpc.git
|  * libraries/old-locale        packages/old-locale.git
|  * libraries/old-time          packages/old-time.git
|  * libraries/process           packages/process.git
|  * libraries/unix              packages/unix.git
|  * nofib                       nofib.git
|  * libraries/parallel          packages/parallel.git
|  * libraries/stm               packages/stm.git
|  * libraries/dph               packages/dph.git
| 
| 
| Ideally, you won't have any outstanding changes in those repos (hint,
| hint!) to make the transition for your GHC clones easier. I'll follow up
| with more specific instructions as soon as I've pushed the changes.
| 
| 
| N.B.: ghc-tarballs will *not* become a submodule, as it would impose a
|       non-neglible cost on everyone, not only the developers on windows
|       and, moreover, the plan is to turn ghc-tarballs into a scripted
|       download (or maybe something git-annex based) as Git is not really
|       suited for such large blobs.
| 
|       See also discussion at
|       <http://permalink.gmane.org/gmane.comp.lang.haskell.ghc.devel/4895>
| 
| 
|  [1]: For the new workflow in case you really happen to have to touch
|       one of the affected modules, see the work-in-progress Wiki entry at
| 
| https://ghc.haskell.org/trac/ghc/wiki/WorkingConventions/Git/Submodules#M
| akingchangestoGHCsubmodules
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