avoid unncessary version output differences in different contexts

Show operating system and repository version list when run outside
a git repo too.

Also made it only display the local repository version when in a git-annex
repo. Before it showed "unknown" when run in a git repo that was not
git-annex initialized. That seemed like confusing behavior.

This commit was sponsored by Jochen Bartl on Patreon.

CHANGELOG

@@ -1,6 +1,8 @@
 git-annex (6.20180530) UNRELEASED; urgency=medium
 
   * Fix build with ghc 8.4+, which broke due to the Semigroup Monoid change. 
+  * version: Show operating system and repository version list 
+    when run outside a git repo too.
 
  -- Joey Hess <id@joeyh.name>  Wed, 30 May 2018 11:49:08 -0400
 

Command/Version.hs

@@ -48,16 +48,9 @@ seekNoRepo o
 
 showVersion :: Annex ()
 showVersion = do
-	v <- getVersion
-	liftIO $ do
-		showPackageVersion
-		vinfo "local repository version" $ fromMaybe "unknown" v
-		vinfo "supported repository versions" $
-			unwords supportedVersions
-		vinfo "upgrade supported from repository versions" $
-			unwords upgradableVersions
-		vinfo "operating system" $
-			unwords [os, arch]
+	liftIO showPackageVersion
+	maybe noop (liftIO . vinfo "local repository version")
+		=<< getVersion
 
 showPackageVersion :: IO ()
 showPackageVersion = do
@@ -67,6 +60,11 @@ showPackageVersion = do
 	vinfo "key/value backends" $ unwords $
 		map (formatKeyVariety . B.backendVariety) Backend.list
 	vinfo "remote types" $ unwords $ map R.typename Remote.remoteTypes
+	vinfo "operating system" $ unwords [os, arch]
+	vinfo "supported repository versions" $
+		unwords supportedVersions
+	vinfo "upgrade supported from repository versions" $
+		unwords upgradableVersions
 
 showRawVersion :: IO ()
 showRawVersion = do

doc/bugs/Operating_system_should_be_contained_in___96__git_annex_version__96___output_regardless_if_in_annex_repo_or_not.mdwn

@@ -45,3 +45,5 @@ It might make sense to also always output "supported repository versions" and "u
 ### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)
 
 I am a long time happy user of git-annex. Thank you for your never ending effort!
+
+> [[done]] --[[Joey]]

doc/bugs/Operating_system_should_be_contained_in___96__git_annex_version__96___output_regardless_if_in_annex_repo_or_not/comment_1_17ab67ebfd21e0844973461bad1d40f9._comment

@@ -0,0 +1,7 @@
+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 1"""
+ date="2018-06-04T16:16:39Z"
+ content="""
+Good catch.
+"""]]