From b5e92eaa4239eb5fb394ac1f9941506eca2ae46a Mon Sep 17 00:00:00 2001
From: Jordan Millar <jordan.millar@iohk.io>
Date: Wed, 4 Mar 2020 12:52:58 +0000
Subject: [PATCH] Add `version` command to `cardano-cli`

---
 cardano-config/src/Cardano/Config/Types.hs |  2 +-
 cardano-node/cardano-node.cabal            |  7 +------
 cardano-node/src/Cardano/CLI/Parsers.hs    |  4 ++++
 cardano-node/src/Cardano/CLI/Run.hs        | 17 +++++++++++++++--
 4 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/cardano-config/src/Cardano/Config/Types.hs b/cardano-config/src/Cardano/Config/Types.hs
index 3a441c7eead..af7e864249c 100644
--- a/cardano-config/src/Cardano/Config/Types.hs
+++ b/cardano-config/src/Cardano/Config/Types.hs
@@ -272,7 +272,7 @@ instance FromJSON ViewMode where
                              <> "Encountered: " <> (T.pack $ show invalid)
 
 -- | Detailed tracing options. Each option enables a tracer
---   which verbosity to the log output.
+--   which logs to the log output.
 data TraceOptions = TraceOptions
   { traceVerbosity :: !TracingVerbosity
   , traceBlockFetchClient :: !Bool
diff --git a/cardano-node/cardano-node.cabal b/cardano-node/cardano-node.cabal
index 0c769f9ee22..f974a190ef4 100644
--- a/cardano-node/cardano-node.cabal
+++ b/cardano-node/cardano-node.cabal
@@ -66,7 +66,6 @@ library
                      , base >=4.12 && <5
                      , bytestring
                      , deepseq
-                     , strict-concurrency
                      , canonical-json
                      , cardano-binary
                      , cardano-config
@@ -81,7 +80,6 @@ library
                      , contra-tracer
                      , cborg >= 0.2.2 && < 0.3
                      , containers
-                     , cryptonite
                      , directory
                      , filepath
                      , formatting
@@ -101,9 +99,9 @@ library
                      , ouroboros-consensus-byron
                      , ouroboros-consensus-cardano
                      , ouroboros-network
-                     , safe-exceptions
                      , serialise
                      , stm
+                     , strict-concurrency
                      , string-conv
                      , template-haskell
                      , text
@@ -111,13 +109,10 @@ library
                      , tracer-transformers
                      , transformers
                      , transformers-except
-                     , tracer-transformers
                      , typed-protocols
                      , ouroboros-network-framework
                      , unordered-containers
                      , utf8-string
-                     , vector
-                     , yaml
 
   default-language:    Haskell2010
   default-extensions:  NoImplicitPrelude
diff --git a/cardano-node/src/Cardano/CLI/Parsers.hs b/cardano-node/src/Cardano/CLI/Parsers.hs
index 1a5308aed3d..894a3fca979 100644
--- a/cardano-node/src/Cardano/CLI/Parsers.hs
+++ b/cardano-node/src/Cardano/CLI/Parsers.hs
@@ -394,6 +394,10 @@ parseMiscellaneous = subparser $ mconcat
       $ ValidateCBOR
           <$> parseCBORObject
           <*> parseFilePath "filepath" "Filepath of CBOR file."
+  , command'
+      "version"
+      "Show cardano-cli version"
+      $ pure DisplayVersion
   , command'
       "pretty-print-cbor"
       "Pretty print a CBOR file."
diff --git a/cardano-node/src/Cardano/CLI/Run.hs b/cardano-node/src/Cardano/CLI/Run.hs
index 297fd4e5c9a..fb337756140 100644
--- a/cardano-node/src/Cardano/CLI/Run.hs
+++ b/cardano-node/src/Cardano/CLI/Run.hs
@@ -33,7 +33,6 @@ module Cardano.CLI.Run (
   ) where
 
 import           Cardano.Prelude hiding (option, trace)
-
 import           Control.Monad.Trans.Except (ExceptT)
 import           Control.Monad.Trans.Except.Extra (hoistEither, firstExceptT, left)
 import qualified Data.ByteString.Lazy as LB
@@ -45,6 +44,7 @@ import           Data.Version (showVersion)
 import qualified Formatting as F
 import           Paths_cardano_node (version)
 import           System.Directory (doesPathExist)
+import           System.Info (arch, compilerName, compilerVersion, os)
 
 import qualified Cardano.Chain.Common as Common
 import qualified Cardano.Chain.Delegation as Delegation
@@ -174,7 +174,7 @@ data ClientCommand
     (NonEmpty UTxO.TxOut)
     -- ^ Genesis UTxO output Address.
 
-    --- Tx Generator Command ----------
+    --- Tx Generator Command ---
 
   | GenerateTxs
     FilePath
@@ -193,17 +193,30 @@ data ClientCommand
     (Maybe TxAdditionalSize)
     (Maybe ExplorerAPIEnpoint)
     [SigningKeyFile]
+
     --- Misc Commands ---
+
+  | DisplayVersion
+
   | ValidateCBOR
     CBORObject
     -- ^ Type of the CBOR object
     FilePath
+
   | PrettyPrintCBOR
     FilePath
    deriving Show
 
 
 runCommand :: ClientCommand -> ExceptT CliError IO ()
+runCommand DisplayVersion = do
+  liftIO . putTextLn
+         . toS
+         $ concat [ "cardano-cli " <> showVersion version
+                  , " - " <> os <> "-" <> arch
+                  , " - " <> compilerName <> "-" <> showVersion compilerVersion
+                  ]
+
 runCommand (Genesis outDir params ptcl) = do
   gen <- mkGenesis params
   dumpGenesis ptcl outDir `uncurry` gen