Improve startup time for commands that do not operate on remotes

And for tab completion, by not unnessessarily statting paths to remotes,
which used to cause eg, spin-up of removable drives.

Got rid of the remotes member of Git.Repo. This was a bit painful.

Remote.Git modifies the list of remotes as it reads their configs,
so still need a persistent list of remotes. So, put it in as
Annex.gitremotes. It's only populated by getGitRemotes, so commands
like examinekey that don't care about remotes won't do so.

This commit was sponsored by Jake Vosloo on Patreon.

Assistant/MakeRemote.hs

@@ -16,6 +16,7 @@ import qualified Remote.Rsync as Rsync
 import qualified Remote.GCrypt as GCrypt
 import qualified Git
 import qualified Git.Command
+import qualified Annex
 import qualified Annex.SpecialRemote
 import Logs.UUID
 import Logs.Remote
@@ -122,26 +123,26 @@ makeGitRemote basename location = makeRemote basename location $ \name ->
  - Returns the name of the remote. -}
 makeRemote :: String -> String -> (RemoteName -> Annex ()) -> Annex RemoteName
 makeRemote basename location a = do
-	g <- gitRepo
-	if not (any samelocation $ Git.remotes g)
+	rs <- Annex.getGitRemotes
+	if not (any samelocation rs)
 		then do
-			let name = uniqueRemoteName basename 0 g
+			let name = uniqueRemoteName basename 0 rs
 			a name
 			return name
 		else return basename
   where
 	samelocation x = Git.repoLocation x == location
 
-{- Generate an unused name for a remote, adding a number if
- - necessary.
+{- Given a list of all remotes, generate an unused name for a new
+ - remote, adding a number if necessary.
  -
  - Ensures that the returned name is a legal git remote name. -}
-uniqueRemoteName :: String -> Int -> Git.Repo -> RemoteName
-uniqueRemoteName basename n r
+uniqueRemoteName :: String -> Int -> [Git.Repo] -> RemoteName
+uniqueRemoteName basename n rs
 	| null namecollision = name
-	| otherwise = uniqueRemoteName legalbasename (succ n) r
+	| otherwise = uniqueRemoteName legalbasename (succ n) rs
   where
-	namecollision = filter samename (Git.remotes r)
+	namecollision = filter samename rs
 	samename x = Git.remoteName x == Just name
 	name
 		| n == 0 = legalbasename

Assistant/WebApp/Configurators/Edit.hs

@@ -94,7 +94,7 @@ setRepoConfig uuid mremote oldc newc = do
 		void uuidMapLoad
 	when nameChanged $ do
 		liftAnnex $ do
-			name <- fromRepo $ uniqueRemoteName (legalName newc) 0
+			name <- uniqueRemoteName (legalName newc) 0 <$> Annex.getGitRemotes
 			{- git remote rename expects there to be a
 			 - remote.<name>.fetch, and exits nonzero if
 			 - there's not. Special remotes don't normally

Assistant/WebApp/Gpg.hs

@@ -69,7 +69,7 @@ withNewSecretKey use = do
  -}
 getGCryptRemoteName :: UUID -> String -> Annex RemoteName
 getGCryptRemoteName u repoloc = do
-	tmpremote <- uniqueRemoteName "tmpgcryptremote" 0 <$> gitRepo
+	tmpremote <- uniqueRemoteName "tmpgcryptremote" 0 <$> Annex.getGitRemotes
 	void $ inRepo $ Git.Command.runBool
 		[ Param "remote"
 		, Param "add"