Merge branch 'master' into joeyconfig

5 files changed, 79 insertions, 0 deletions

diff --git a/doc/forum/Inherited_Variables.../comment_1_082e5d5b8e25335bc90577abcfef1d21._comment b/doc/forum/Inherited_Variables.../comment_1_082e5d5b8e25335bc90577abcfef1d21._comment
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+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 1"""
+ date="2017-01-26T06:39:35Z"
+ content="""
+This is where propellor's `Info` system comes in. `Propellor.Info.getOS`
+can be run to get the OS info.
+
+It's also possible to add new properties that add new values with custom
+types to `Info`.
+
+The hostname is not currently stored in `Info`, but it probably should be;
+that would be a good simplification. Currently there's a 
+separate way to get the hostname: `asks hostName` (run in the Propellor monad)
+"""]]
diff --git a/doc/forum/Inherited_Variables.../comment_2_988319ed6de46eff2eac0d5ef36382f9._comment b/doc/forum/Inherited_Variables.../comment_2_988319ed6de46eff2eac0d5ef36382f9._comment
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+++ b/doc/forum/Inherited_Variables.../comment_2_988319ed6de46eff2eac0d5ef36382f9._comment
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+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 2"""
+ date="2017-01-26T06:50:39Z"
+ content="""
+A worked example:
+
+	server :: Property Debian
+	server = property' "some description" $ \w -> do
+		os <- getOS
+		hostname <- asks hostName
+		ensureProperty w $
+			File.hasContent "/etc/apt/sources.list.d/matrix.list"
+				(genSourcesList os hostname)
+"""]]
diff --git a/doc/forum/Inherited_Variables.../comment_3_acf78fa9f732f070bf73c2ab601464ee._comment b/doc/forum/Inherited_Variables.../comment_3_acf78fa9f732f070bf73c2ab601464ee._comment
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+[[!comment format=mdwn
+ username="craige"
+ avatar="http://cdn.libravatar.org/avatar/64ac5816ea3a51347d1f699022d1fdc1"
+ subject="Thanks!"
+ date="2017-01-27T21:54:45Z"
+ content="""
+Thanks Joey. I think that's exactly what I need. Very helpful :-)
+"""]]
diff --git a/doc/forum/Inherited_Variables.../comment_4_5bf7b1f69b48b4d9c516d424e4438208._comment b/doc/forum/Inherited_Variables.../comment_4_5bf7b1f69b48b4d9c516d424e4438208._comment
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+[[!comment format=mdwn
+ username="craige@a46118dff5bc0fad85259759970d8b4b9fc377d7"
+ nickname="craige"
+ avatar="http://cdn.libravatar.org/avatar/6d2207226de755da46aa2fdff9af70b2"
+ subject="comment 4"
+ date="2017-02-03T00:04:05Z"
+ content="""
+Ugh, sorry to ask again but I'm specifically stuck trying to extract the Debian suite only from this. Is this stored as a specific value I can draw on? I've been wading through the source and added in a swag of trial and error with no luck.
+
+I can see the suite listed in the output 
+
+    Just (System (Debian Linux (Stable \"jessie\"))
+
+but I was wondering if there was a method to pull out just the suite code name (ie: \"jessie\") that did not involve a regex looking for it amongst that output. 
+
+The goal is to query Info so that a suite name can be added to a sources list.
+
+If I have to regex, that's OK, I just didn't want to go down that path if there was a smarted way.
+
+Thanks Joey :-)
+"""]]
diff --git a/doc/forum/Inherited_Variables.../comment_5_6fbd29f568ec8b97be47874e2aac57a3._comment b/doc/forum/Inherited_Variables.../comment_5_6fbd29f568ec8b97be47874e2aac57a3._comment
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+++ b/doc/forum/Inherited_Variables.../comment_5_6fbd29f568ec8b97be47874e2aac57a3._comment
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+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 5"""
+ date="2017-02-03T19:32:58Z"
+ content="""
+What you're looking for is not a regexp, but Haskell's [pattern
+matching](https://www.haskell.org/tutorial/patterns.html).
+
+For example:
+
+	myproperty :: Property Debian
+	myproperty = withOS "some desc here" $ \w o -> case o of
+		-- Pattern match on the OS, to get the Debian stable release
+		(Just (System (Debian _kernel (Stable release)) _arch)) ->
+			ensureProperty w $ Apt.setSourcesListD (sourcesLines release) "mysources"
+		_ -> unsupportedOS
+
+	sourcesLines :: Release -> [Line]
+	sourcesLines release = undefined
+"""]]