Reorder arg list, note that schema is not required

docs/install/server.md

@@ -65,7 +65,7 @@ If you want to run the test suite, stack can do that too: `stack test`.
 ### Running the Server
 
 ```bash
-postgrest postgres://user:pass@host:port/db -s public -a anon_user [other flags]
+postgrest postgres://user:pass@host:port/db -a anon_user [other flags]
 ```
 
 The user in the connection string is the "authenticator role," i.e.
@@ -73,7 +73,7 @@ a role which is used temporarily to switch into other roles depending
 on the authentication request JWT. For simple API's you can use the
 same role for authenticator and anonymous.
 
-The possible flags are:
+The complete list of options:
 
 <dl>
 <dt>-p, --port</dt>
@@ -84,7 +84,7 @@ The possible flags are:
 <dd>The database role used to execute commands for those requests
     which provide no JWT authorization.</dd>
 
-<dt>-s, --schema (required)</dt>
+<dt>-s, --schema</dt>
 <dd>The db schema which you want to expose as an API. For historical
     reasons it defaults to <code>1</code>, but you're more likely
     to want to choose a value of <code>public</code>.</dd>

src/PostgREST/Config.hs

@@ -37,9 +37,9 @@ import           Prelude
 -- | Data type to store all command line options
 data AppConfig = AppConfig {
     configDatabase  :: String
-  , configPort      :: Int
   , configAnonRole  :: String
   , configSchema    :: String
+  , configPort      :: Int
   , configJwtSecret :: Secret
   , configPool      :: Int
   , configMaxRows   :: Maybe Integer
@@ -48,10 +48,9 @@ data AppConfig = AppConfig {
 argParser :: Parser AppConfig
 argParser = AppConfig
   <$> argument str (help "(REQUIRED) database connection string" <> metavar "DB_URL")
-
-  <*> option auto  (long "port"       <> short 'p' <> help "port number on which to run HTTP server" <> metavar "PORT" <> value 3000 <> showDefault)
   <*> strOption    (long "anonymous"  <> short 'a' <> help "(REQUIRED) postgres role to use for non-authenticated requests" <> metavar "ROLE")
-  <*> strOption    (long "schema"     <> short 's' <> help "(REQUIRED) schema to use for API routes" <> metavar "NAME" <> value "public" <> showDefault)
+  <*> strOption    (long "schema"     <> short 's' <> help "schema to use for API routes" <> metavar "NAME" <> value "public" <> showDefault)
+  <*> option auto  (long "port"       <> short 'p' <> help "port number on which to run HTTP server" <> metavar "PORT" <> value 3000 <> showDefault)
   <*> (secret . cs <$>
       strOption    (long "jwt-secret" <> short 'j' <> help "secret used to encrypt and decrypt JWT tokens" <> metavar "SECRET" <> value "secret" <> showDefault))
   <*> option auto  (long "pool"       <> short 'o' <> help "max connections in database pool" <> metavar "COUNT" <> value 10 <> showDefault)