Add 'store-dir' global flag for custom store location

Cabal/doc/nix-local-build.rst

@@ -145,11 +145,11 @@ identify the result of a build; if we compute this identifier and we
 find that we already have this ID built, we can just use the already
 built version.
 
-The global package store is ``~/.cabal/store``; if you need to clear
-your store for whatever reason (e.g., to reclaim disk space or because
-the global store is corrupted), deleting this directory is safe
-(``new-build`` will just rebuild everything it needs on its next
-invocation).
+The global package store is ``~/.cabal/store`` (configurable via 
+global `store-dir` option); if you need to clear your store for 
+whatever reason (e.g., to reclaim disk space or because the global
+store is corrupted), deleting this directory is safe (``new-build``
+will just rebuild everything it needs on its next invocation).
 
 This split motivates some of the UI choices for Nix-style local build
 commands. For example, flags passed to ``cabal new-build`` are only
@@ -641,6 +641,10 @@ package, and thus apply globally:
 
     This option cannot be specified via a ``cabal.project`` file.
 
+.. option:: --store-dir=DIR
+
+    Specifies the name of the directory of the global package store.
+
 Solver configuration options
 ----------------------------
 

cabal-install/Distribution/Client/Config.hs

@@ -227,7 +227,8 @@ instance Semigroup SavedConfig where
         globalIgnoreSandbox     = combine globalIgnoreSandbox,
         globalIgnoreExpiry      = combine globalIgnoreExpiry,
         globalHttpTransport     = combine globalHttpTransport,
-        globalNix               = combine globalNix
+        globalNix               = combine globalNix,
+        globalStoreDir          = combine globalStoreDir
         }
         where
           combine        = combine'        savedGlobalFlags

cabal-install/Distribution/Client/DistDirLayout.hs

@@ -1,6 +1,6 @@
 {-# LANGUAGE RecordWildCards #-}
 
--- | 
+-- |
 --
 -- The layout of the .\/dist\/ directory where cabal keeps all of it's state
 -- and build artifacts.
@@ -18,7 +18,8 @@ module Distribution.Client.DistDirLayout (
 
     -- * 'CabalDirLayout'
     CabalDirLayout(..),
-    defaultCabalDirLayout,
+    mkCabalDirLayout,
+    defaultCabalDirLayout
 ) where
 
 import Data.Maybe (fromMaybe)
@@ -243,12 +244,16 @@ defaultStoreDirLayout storeRoot =
 
 defaultCabalDirLayout :: FilePath -> CabalDirLayout
 defaultCabalDirLayout cabalDir =
+    mkCabalDirLayout cabalDir Nothing Nothing
+
+mkCabalDirLayout :: FilePath -- ^ Cabal directory
+                 -> Maybe FilePath -- ^ Store directory
+                 -> Maybe FilePath -- ^ Log directory
+                 -> CabalDirLayout
+mkCabalDirLayout cabalDir mstoreDir mlogDir =
     CabalDirLayout {..}
   where
-
-    cabalStoreDirLayout = defaultStoreDirLayout (cabalDir </> "store")
-
-    cabalLogsDirectory = cabalDir </> "logs"
-
-    cabalWorldFile = cabalDir </> "world"
-
+    cabalStoreDirLayout =
+        defaultStoreDirLayout (fromMaybe (cabalDir </> "store") mstoreDir)
+    cabalLogsDirectory = fromMaybe (cabalDir </> "logs") mlogDir
+    cabalWorldFile = cabalDir </> "world"

cabal-install/Distribution/Client/GlobalFlags.hs

@@ -68,7 +68,8 @@ data GlobalFlags = GlobalFlags {
     globalIgnoreSandbox     :: Flag Bool,
     globalIgnoreExpiry      :: Flag Bool,    -- ^ Ignore security expiry dates
     globalHttpTransport     :: Flag String,
-    globalNix               :: Flag Bool  -- ^ Integrate with Nix
+    globalNix               :: Flag Bool,  -- ^ Integrate with Nix
+    globalStoreDir          :: Flag FilePath
   } deriving Generic
 
 defaultGlobalFlags :: GlobalFlags
@@ -87,7 +88,8 @@ defaultGlobalFlags  = GlobalFlags {
     globalIgnoreSandbox     = Flag False,
     globalIgnoreExpiry      = Flag False,
     globalHttpTransport     = mempty,
-    globalNix               = Flag False
+    globalNix               = Flag False,
+    globalStoreDir          = mempty
   }
 
 instance Monoid GlobalFlags where

cabal-install/Distribution/Client/ProjectConfig/Legacy.hs

@@ -399,7 +399,8 @@ convertLegacyBuildOnlyFlags globalFlags configFlags
       globalLogsDir           = projectConfigLogsDir,
       globalWorldFile         = _,
       globalHttpTransport     = projectConfigHttpTransport,
-      globalIgnoreExpiry      = projectConfigIgnoreExpiry
+      globalIgnoreExpiry      = projectConfigIgnoreExpiry,
+      globalStoreDir          = projectConfigStoreDir
     } = globalFlags
 
     ConfigFlags {
@@ -479,7 +480,8 @@ convertToLegacySharedConfig
       globalIgnoreSandbox     = mempty,
       globalIgnoreExpiry      = projectConfigIgnoreExpiry,
       globalHttpTransport     = projectConfigHttpTransport,
-      globalNix               = mempty
+      globalNix               = mempty,
+      globalStoreDir          = projectConfigStoreDir
     }
 
     configFlags = mempty {
@@ -805,7 +807,7 @@ legacySharedConfigFieldDescrs =
       ]
   . filterFields
       [ "remote-repo-cache"
-      , "logs-dir", "ignore-expiry", "http-transport"
+      , "logs-dir", "store-dir", "ignore-expiry", "http-transport"
       ]
   . commandOptionsToFields
   ) (commandOptions (globalCommand []) ParseArgs)

cabal-install/Distribution/Client/ProjectConfig/Types.hs

@@ -143,7 +143,8 @@ data ProjectConfigBuildOnly
        projectConfigHttpTransport         :: Flag String,
        projectConfigIgnoreExpiry          :: Flag Bool,
        projectConfigCacheDir              :: Flag FilePath,
-       projectConfigLogsDir               :: Flag FilePath
+       projectConfigLogsDir               :: Flag FilePath,
+       projectConfigStoreDir              :: Flag FilePath
      }
   deriving (Eq, Show, Generic)
 

cabal-install/Distribution/Client/ProjectOrchestration.hs

@@ -167,16 +167,24 @@ establishProjectBaseContext verbosity cliConfig = do
     projectRoot <- either throwIO return =<<
                    findProjectRoot Nothing mprojectFile
 
-    let cabalDirLayout = defaultCabalDirLayout cabalDir
-        distDirLayout  = defaultDistDirLayout projectRoot
+    let distDirLayout  = defaultDistDirLayout projectRoot
                                               mdistDirectory
 
     (projectConfig, localPackages) <-
       rebuildProjectConfig verbosity
                            distDirLayout
                            cliConfig
 
-    let buildSettings = resolveBuildTimeSettings
+    let ProjectConfigBuildOnly {
+          projectConfigLogsDir,
+          projectConfigStoreDir
+        } = projectConfigBuildOnly projectConfig
+
+        mlogsDir = Setup.flagToMaybe projectConfigLogsDir
+        mstoreDir = Setup.flagToMaybe projectConfigStoreDir
+        cabalDirLayout = mkCabalDirLayout cabalDir mstoreDir mlogsDir
+
+        buildSettings = resolveBuildTimeSettings
                           verbosity cabalDirLayout
                           projectConfig
 

cabal-install/Distribution/Client/Setup.hs

@@ -368,6 +368,11 @@ globalCommand commands = CommandUI {
          "The location of the world file"
          globalWorldFile (\v flags -> flags { globalWorldFile = v })
          (reqArgFlag "FILE")
+
+      ,option [] ["store-dir"]
+         "The location of the nix-local-build store"
+         globalStoreDir (\v flags -> flags { globalStoreDir = v })
+         (reqArgFlag "DIR")
       ]
 
 -- ------------------------------------------------------------

cabal-install/changelog

@@ -15,8 +15,10 @@
 	relaxation can be now limited to a specific release of a package,
 	plus there's a now syntax for relaxing only caret-style (i.e. '^>=')
 	dependencies (#4575, #4669).
+	* `--store-dir` option can be used to configure the location of 
+	the build global build store.
 
-2.0.0.0 Ryan Thomas <[email protected]> July 2017
+2.0.0.2 Mikhail Glushenkov <[email protected]> July 2017
 	* Removed the '--root-cmd' parameter of the 'install' command
 	(#3356).
 	* Deprecated 'cabal install --global' (#3356).

cabal-install/tests/UnitTests/Distribution/Client/ProjectConfig.hs

@@ -359,6 +359,7 @@ instance Arbitrary ProjectConfigBuildOnly where
         <*> arbitrary
         <*> (fmap getShortToken <$> arbitrary)
         <*> (fmap getShortToken <$> arbitrary)
+        <*> (fmap getShortToken <$> arbitrary)
       where
         arbitraryNumJobs = fmap (fmap getPositive) <$> arbitrary
 
@@ -378,7 +379,8 @@ instance Arbitrary ProjectConfigBuildOnly where
                                   , projectConfigHttpTransport = x13
                                   , projectConfigIgnoreExpiry = x14
                                   , projectConfigCacheDir = x15
-                                  , projectConfigLogsDir = x16 } =
+                                  , projectConfigLogsDir = x16
+                                  , projectConfigStoreDir = x17 } =
       [ ProjectConfigBuildOnly { projectConfigVerbosity = x00'
                                , projectConfigDryRun = x01'
                                , projectConfigOnlyDeps = x02'
@@ -395,7 +397,8 @@ instance Arbitrary ProjectConfigBuildOnly where
                                , projectConfigHttpTransport = x13
                                , projectConfigIgnoreExpiry = x14'
                                , projectConfigCacheDir = x15
-                               , projectConfigLogsDir = x16 }
+                               , projectConfigLogsDir = x16
+                               , projectConfigStoreDir = x17}
       | ((x00', x01', x02', x03', x04'),
          (x05', x06', x07', x08', x09'),
          (x10', x11', x12',       x14'))