Add 'all-packages' section to cabal.project files

Cabal/doc/nix-local-build.rst

@@ -861,7 +861,7 @@ The following settings control the behavior of the dependency solver:
 Package configuration options
 -----------------------------
 
-Package options affect the building of specific packages. There are two
+Package options affect the building of specific packages. There are three
 ways a package option can be specified:
 
 -  They can be specified at the top-level, in which case they apply only
@@ -871,6 +871,11 @@ ways a package option can be specified:
    apply to the build of the package, whether or not it is local or
    external.
 
+-  They can be specified inside an ``all-packages`` stanza, in which case they
+   apply to all packages, local ones from the project and also external
+   dependencies.
+
+
 For example, the following options specify that :cfg-field:`optimization`
 should be turned off for all local packages, and that ``bytestring`` (possibly
 an external dependency) should be built with ``-fno-state-hack``::

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

@@ -102,6 +102,7 @@ data LegacyProjectConfig = LegacyProjectConfig {
        legacyPackagesNamed     :: [Dependency],
 
        legacySharedConfig      :: LegacySharedConfig,
+       legacyAllConfig         :: LegacyPackageConfig,
        legacyLocalConfig       :: LegacyPackageConfig,
        legacySpecificConfig    :: MapMappend PackageName LegacyPackageConfig
      } deriving Generic
@@ -226,6 +227,7 @@ convertLegacyProjectConfig
     legacyPackagesNamed,
     legacySharedConfig = LegacySharedConfig globalFlags configShFlags
                                             configExFlags installSharedFlags,
+    legacyAllConfig,
     legacyLocalConfig  = LegacyPackageConfig configFlags installPerPkgFlags
                                              haddockFlags,
     legacySpecificConfig
@@ -238,15 +240,18 @@ convertLegacyProjectConfig
       projectPackagesNamed         = legacyPackagesNamed,
 
       projectConfigBuildOnly       = configBuildOnly,
-      projectConfigShared          = configAllPackages,
+      projectConfigShared          = configPackagesShared,
       projectConfigProvenance      = mempty,
+      projectConfigAllPackages     = configAllPackages,
       projectConfigLocalPackages   = configLocalPackages,
       projectConfigSpecificPackage = fmap perPackage legacySpecificConfig
     }
   where
+    configAllPackages   = convertLegacyPerPackageFlags g i h
+                            where LegacyPackageConfig g i h = legacyAllConfig
     configLocalPackages = convertLegacyPerPackageFlags
                             configFlags installPerPkgFlags haddockFlags
-    configAllPackages   = convertLegacyAllPackageFlags
+    configPackagesShared= convertLegacyAllPackageFlags
                             globalFlags (configFlags <> configShFlags)
                             configExFlags installSharedFlags
     configBuildOnly     = convertLegacyBuildOnlyFlags
@@ -436,6 +441,7 @@ convertToLegacyProjectConfig
       projectPackagesOptional,
       projectPackagesRepo,
       projectPackagesNamed,
+      projectConfigAllPackages,
       projectConfigLocalPackages,
       projectConfigSpecificPackage
     } =
@@ -445,6 +451,8 @@ convertToLegacyProjectConfig
       legacyPackagesRepo     = projectPackagesRepo,
       legacyPackagesNamed    = projectPackagesNamed,
       legacySharedConfig     = convertToLegacySharedConfig projectConfig,
+      legacyAllConfig        = convertToLegacyPerPackageConfig
+                                 projectConfigAllPackages,
       legacyLocalConfig      = convertToLegacyAllPackageConfig projectConfig
                             <> convertToLegacyPerPackageConfig
                                  projectConfigLocalPackages,
@@ -1030,6 +1038,7 @@ legacyPackageConfigFieldDescrs =
 legacyPackageConfigSectionDescrs :: [SectionDescr LegacyProjectConfig]
 legacyPackageConfigSectionDescrs =
     [ packageRepoSectionDescr
+    , allPackagesOptionsSectionDescr
     , packageSpecificOptionsSectionDescr
     , liftSection
         legacyLocalConfig
@@ -1074,26 +1083,58 @@ packageRepoSectionDescr =
                            }
     }
 
+-- | The definitions of all the fields that can appear in the @package pkgfoo@
+-- and @all-packages@ sections of the @cabal.project@-format files.
+--
+packageSpecificOptionsFieldDescrs :: [FieldDescr LegacyPackageConfig]
+packageSpecificOptionsFieldDescrs =
+    legacyPackageConfigFieldDescrs
+ ++ programOptionsFieldDescrs
+      (configProgramArgs . legacyConfigureFlags)
+      (\args pkgconf -> pkgconf {
+          legacyConfigureFlags = (legacyConfigureFlags pkgconf) {
+            configProgramArgs  = args
+          }
+        }
+      )
+ ++ liftFields
+      legacyConfigureFlags
+      (\flags pkgconf -> pkgconf {
+          legacyConfigureFlags = flags
+        }
+      )
+      programLocationsFieldDescrs
+
+-- | The definition of the @all-packages@ sections of the
+-- @cabal.project@-format files. This is the one that applies to all packages
+-- used anywhere by the project, locally or as dependencies.
+--
+allPackagesOptionsSectionDescr :: SectionDescr LegacyProjectConfig
+allPackagesOptionsSectionDescr =
+    SectionDescr {
+      sectionName        = "all-packages",
+      sectionFields      = packageSpecificOptionsFieldDescrs,
+      sectionSubsections = [],
+      sectionGet         = (\x->[("", x)])
+                         . legacyAllConfig,
+      sectionSet         =
+        \lineno unused pkgsconf projconf -> do
+          unless (null unused) $
+            syntaxError lineno "the section 'all-packages' takes no arguments"
+          return projconf {
+            legacyAllConfig = legacyAllConfig projconf <> pkgsconf
+          },
+      sectionEmpty       = mempty
+    }
+
+-- | The definition of the @package pkgfoo@ sections of the @cabal.project@-format
+-- files. This section is per-package name.
+--
 packageSpecificOptionsSectionDescr :: SectionDescr LegacyProjectConfig
 packageSpecificOptionsSectionDescr =
     SectionDescr {
       sectionName        = "package",
-      sectionFields      = legacyPackageConfigFieldDescrs
-                        ++ programOptionsFieldDescrs
-                             (configProgramArgs . legacyConfigureFlags)
-                             (\args pkgconf -> pkgconf {
-                                 legacyConfigureFlags = (legacyConfigureFlags pkgconf) {
-                                   configProgramArgs  = args
-                                 }
-                               }
-                             )
-                        ++ liftFields
-                             legacyConfigureFlags
-                             (\flags pkgconf -> pkgconf {
-                                 legacyConfigureFlags = flags
-                               }
-                             )
-                             programLocationsFieldDescrs,
+      sectionFields      = packageSpecificOptionsFieldDescrs,
       sectionSubsections = [],
       sectionGet         = \projconf ->
                              [ (display pkgname, pkgconf)

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

@@ -113,6 +113,10 @@ data ProjectConfig
        projectConfigShared          :: ProjectConfigShared,
        projectConfigProvenance      :: Set ProjectConfigProvenance,
 
+       -- | Configuration to be applied to *all* packages,
+       -- whether named in `cabal.project` or not.
+       projectConfigAllPackages     :: PackageConfig,
+
        -- | Configuration to be applied to *local* packages; i.e.,
        -- any packages which are explicitly named in `cabal.project`.
        projectConfigLocalPackages   :: PackageConfig,

cabal-install/Distribution/Client/ProjectPlanning.hs

@@ -590,6 +590,7 @@ rebuildInstallPlan verbosity
                                   , ElaboratedSharedConfig )
     phaseElaboratePlan ProjectConfig {
                          projectConfigShared,
+                         projectConfigAllPackages,
                          projectConfigLocalPackages,
                          projectConfigSpecificPackage,
                          projectConfigBuildOnly
@@ -617,6 +618,7 @@ rebuildInstallPlan verbosity
                 sourcePackageHashes
                 defaultInstallDirs
                 projectConfigShared
+                projectConfigAllPackages
                 projectConfigLocalPackages
                 (getMapMappend projectConfigSpecificPackage)
         let instantiatedPlan = instantiateInstallPlan elaboratedPlan
@@ -1142,6 +1144,7 @@ elaborateInstallPlan
   -> InstallDirs.InstallDirTemplates
   -> ProjectConfigShared
   -> PackageConfig
+  -> PackageConfig
   -> Map PackageName PackageConfig
   -> LogProgress (ElaboratedInstallPlan, ElaboratedSharedConfig)
 elaborateInstallPlan verbosity platform compiler compilerprogdb pkgConfigDB
@@ -1151,6 +1154,7 @@ elaborateInstallPlan verbosity platform compiler compilerprogdb pkgConfigDB
                      sourcePackageHashes
                      defaultInstallDirs
                      sharedPackageConfig
+                     allPackagesConfig
                      localPackagesConfig
                      perPackageConfig = do
     x <- elaboratedInstallPlan
@@ -1758,14 +1762,17 @@ elaborateInstallPlan verbosity platform compiler compilerprogdb pkgConfigDB
 
     lookupPerPkgOption :: (Package pkg, Monoid m)
                        => pkg -> (PackageConfig -> m) -> m
-    lookupPerPkgOption pkg f
-      -- the project config specifies values that apply to packages local to
-      -- but by default non-local packages get all default config values
-      -- the project, and can specify per-package values for any package,
-      | isLocalToProject pkg = local `mappend` perpkg
-      | otherwise            =                 perpkg
+    lookupPerPkgOption pkg f =
+        -- This is where we merge the options from the project config that
+        -- apply to all packages, all project local packages, and to specific
+        -- named packages
+        global `mappend` local `mappend` perpkg
       where
-        local  = f localPackagesConfig
+        global = f allPackagesConfig
+        local  | isLocalToProject pkg
+               = f localPackagesConfig
+               | otherwise
+               = mempty
         perpkg = maybe mempty f (Map.lookup (packageName pkg) perPackageConfig)
 
     inplacePackageDbs = storePackageDbs

cabal-install/changelog

@@ -46,6 +46,8 @@
 	* Added support for '--enable-tests' and '--enable-benchmarks' to
 	'cabal fetch' (#4948).
 	* Removed support for building cabal-install with GHC < 7.10.
+	* New 'all-packages' section in 'cabal.project' files that applies
+	options to all packages, not just those local to the project.
 
 2.0.0.1 Mikhail Glushenkov <[email protected]> December 2017
 	* Support for GHC's numeric -g debug levels (#4673).

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

@@ -284,6 +284,7 @@ instance Arbitrary ProjectConfig where
         <*> arbitrary
         <*> arbitrary
         <*> arbitrary
+        <*> arbitrary
         <*> (MapMappend . fmap getNonMEmpty . Map.fromList
                <$> shortListOf 3 arbitrary)
         -- package entries with no content are equivalent to
@@ -297,7 +298,8 @@ instance Arbitrary ProjectConfig where
                          , projectConfigShared = x5
                          , projectConfigProvenance = x6
                          , projectConfigLocalPackages = x7
-                         , projectConfigSpecificPackage = x8 } =
+                         , projectConfigSpecificPackage = x8
+                         , projectConfigAllPackages = x9 } =
       [ ProjectConfig { projectPackages = x0'
                       , projectPackagesOptional = x1'
                       , projectPackagesRepo = x2'
@@ -307,10 +309,11 @@ instance Arbitrary ProjectConfig where
                       , projectConfigProvenance = x6'
                       , projectConfigLocalPackages = x7'
                       , projectConfigSpecificPackage = (MapMappend
-                                                         (fmap getNonMEmpty x8')) }
-      | ((x0', x1', x2', x3'), (x4', x5', x6', x7', x8'))
+                                                         (fmap getNonMEmpty x8'))
+                      , projectConfigAllPackages = x9' }
+      | ((x0', x1', x2', x3'), (x4', x5', x6', x7', x8', x9'))
           <- shrink ((x0, x1, x2, x3),
-                      (x4, x5, x6, x7, fmap NonMEmpty (getMapMappend x8)))
+                      (x4, x5, x6, x7, fmap NonMEmpty (getMapMappend x8), x9))
       ]
 
 newtype PackageLocationString