Add separate cache for getPkgConfigDb

Querying pkg-config for the version of every module can be a very expensive operation on some systems. This change adds a separate, per-project, cache for pkgConfigDB; reducing the cost from "every plan change" to "every pkg-config-db change per project". No input key is required since getPkgConfigDb already specifies the directories to monitor for changes. These are obtained from pkg-config itself as `pkg-config --variable pc_path pkg-config` as documented in pkg-config(1). A notice is presented to the user when refreshing the packagedb.
haskell · Nov 8, 2023 · eaf490a · eaf490a
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diff --git a/cabal-install/src/Distribution/Client/ProjectPlanning.hs b/cabal-install/src/Distribution/Client/ProjectPlanning.hs
@@ -638,6 +638,7 @@ rebuildInstallPlan
       fileMonitorSourceHashes = newFileMonitorInCacheDir "source-hashes"
       fileMonitorElaboratedPlan = newFileMonitorInCacheDir "elaborated-plan"
       fileMonitorImprovedPlan = newFileMonitorInCacheDir "improved-plan"
+      fileMonitorPkgConfigDb = newFileMonitorInCacheDir "pkg-config-db"
 
       newFileMonitorInCacheDir :: Eq a => FilePath -> FileMonitor a b
       newFileMonitorInCacheDir = newFileMonitor . distProjectCacheFile
@@ -725,7 +726,11 @@ rebuildInstallPlan
                   withRepoCtx
                   (solverSettingIndexState solverSettings)
                   (solverSettingActiveRepos solverSettings)
-              pkgConfigDB <- getPkgConfigDb verbosity progdb
+
+              pkgConfigDB <-
+                rerunIfChanged verbosity fileMonitorPkgConfigDb () $ do
+                  liftIO $ notice verbosity "Querying pkg-config database..."
+                  getPkgConfigDb verbosity progdb
 
               -- TODO: [code cleanup] it'd be better if the Compiler contained the
               -- ConfiguredPrograms that it needs, rather than relying on the progdb

diff --git a/cabal-testsuite/PackageTests/Backpack/Includes2/cabal-external-target.out b/cabal-testsuite/PackageTests/Backpack/Includes2/cabal-external-target.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Backpack/Includes2/cabal-external.out b/cabal-testsuite/PackageTests/Backpack/Includes2/cabal-external.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Backpack/Includes2/cabal-internal-target.out b/cabal-testsuite/PackageTests/Backpack/Includes2/cabal-internal-target.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Backpack/Includes2/cabal-internal.out b/cabal-testsuite/PackageTests/Backpack/Includes2/cabal-internal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Backpack/Includes3/cabal-external.out b/cabal-testsuite/PackageTests/Backpack/Includes3/cabal-external.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Backpack/Includes3/cabal-internal.out b/cabal-testsuite/PackageTests/Backpack/Includes3/cabal-internal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:
@@ -18,8 +19,7 @@ Configuring library 'indef' instantiated with
   Data.Map = containers-<VERSION>:Data.Map
 for Includes3-0.1.0.0...
 Preprocessing library 'indef' for Includes3-0.1.0.0...
-Building library 'indef' instantiated with
-  Data.Map = containers-<VERSION>:Data.Map
+Building library 'indef' instantiated with Data.Map = containers-<VERSION>:Data.Map
 for Includes3-0.1.0.0...
 Configuring executable 'exe' for Includes3-0.1.0.0...
 Preprocessing executable 'exe' for Includes3-0.1.0.0...

diff --git a/cabal-testsuite/PackageTests/Backpack/Includes3/cabal-repo.out b/cabal-testsuite/PackageTests/Backpack/Includes3/cabal-repo.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Backpack/Reexport2/cabal.out b/cabal-testsuite/PackageTests/Backpack/Reexport2/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Error:
     Problem with module re-exports:

diff --git a/cabal-testsuite/PackageTests/Backpack/T6385/cabal.out b/cabal-testsuite/PackageTests/Backpack/T6385/cabal.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Backpack/bkpcabal01/cabal.out b/cabal-testsuite/PackageTests/Backpack/bkpcabal01/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/BuildDeps/DepCycle/cabal.out b/cabal-testsuite/PackageTests/BuildDeps/DepCycle/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Error:
     Dependency cycle between the following components:

diff --git a/cabal-testsuite/PackageTests/BuildDeps/InternalLibrary1/cabal.out b/cabal-testsuite/PackageTests/BuildDeps/InternalLibrary1/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/BuildTargets/UseLocalPackage/use-local-version-of-package.out b/cabal-testsuite/PackageTests/BuildTargets/UseLocalPackage/use-local-version-of-package.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/...uite/PackageTests/BuildTargets/UseLocalPackageForSetup/use-local-package-as-setup-dep.out b/...uite/PackageTests/BuildTargets/UseLocalPackageForSetup/use-local-package-as-setup-dep.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Error: [Cabal-7107]
 Could not resolve dependencies:

diff --git a/cabal-testsuite/PackageTests/BuildToolDepends/setup.out b/cabal-testsuite/PackageTests/BuildToolDepends/setup.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/BuildTools/External/cabal.out b/cabal-testsuite/PackageTests/BuildTools/External/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/BuildTools/Internal/cabal.out b/cabal-testsuite/PackageTests/BuildTools/Internal/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/CmmSources/cabal.out b/cabal-testsuite/PackageTests/CmmSources/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/CmmSourcesDyn/cabal.out b/cabal-testsuite/PackageTests/CmmSourcesDyn/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/CmmSourcesExe/cabal.out b/cabal-testsuite/PackageTests/CmmSourcesExe/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/ConditionalAndImport/cabal.out b/cabal-testsuite/PackageTests/ConditionalAndImport/cabal.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/ConfigFile/T8487/cabal.out b/cabal-testsuite/PackageTests/ConfigFile/T8487/cabal.out
@@ -1,4 +1,5 @@
 # cabal build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O2
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Configure/cabal.out b/cabal-testsuite/PackageTests/Configure/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/CopyHie/cabal.out b/cabal-testsuite/PackageTests/CopyHie/cabal.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/CustomSegfault/cabal.out b/cabal-testsuite/PackageTests/CustomSegfault/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/CustomWithoutCabal/cabal.out b/cabal-testsuite/PackageTests/CustomWithoutCabal/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/CustomWithoutCabalDefaultMain/cabal.out b/cabal-testsuite/PackageTests/CustomWithoutCabalDefaultMain/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/Exec/cabal.out b/cabal-testsuite/PackageTests/Exec/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/ExecModern/cabal.out b/cabal-testsuite/PackageTests/ExecModern/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/ExtraPackages/cabal.out b/cabal-testsuite/PackageTests/ExtraPackages/cabal.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/ExtraProgPath/setup.out b/cabal-testsuite/PackageTests/ExtraProgPath/setup.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Warning: cannot determine version of <ROOT>/./pkg-config :
 ""
 Warning: cannot determine version of <ROOT>/./pkg-config :

diff --git a/cabal-testsuite/PackageTests/FFI/ForeignOptsC/cabal.out b/cabal-testsuite/PackageTests/FFI/ForeignOptsC/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/FFI/ForeignOptsCxx/cabal.out b/cabal-testsuite/PackageTests/FFI/ForeignOptsCxx/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/HaddockArgs/hoogle.out b/cabal-testsuite/PackageTests/HaddockArgs/hoogle.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/HaddockArgs/quickjump.out b/cabal-testsuite/PackageTests/HaddockArgs/quickjump.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/HaddockProject/haddock-project.out b/cabal-testsuite/PackageTests/HaddockProject/haddock-project.out
@@ -2,6 +2,7 @@
 Downloading the latest package list from test-local-repo
 # cabal haddock-project
 Warning: haddock-project command is experimental, it might break in the future
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/HaddockWarn/cabal.out b/cabal-testsuite/PackageTests/HaddockWarn/cabal.out
@@ -1,3 +1,4 @@
 # cabal v2-haddock
+Querying pkg-config database...
 Resolving dependencies...
-No documentation was generated as this package does not contain a library. Perhaps you want to use the --haddock-all flag, or one or more of the --haddock-executables, --haddock-tests, --haddock-benchmarks or --haddock-internal flags.
+No documentation was generated as this package does not contain a library. Perhaps you want to use the --haddock-all flag, or one or more of the --haddock-executables, --haddock-tests, --haddock-benchmarks or --haddock-internal flags.
diff --git a/cabal-testsuite/PackageTests/InternalLibraries/cabal-per-package.out b/cabal-testsuite/PackageTests/InternalLibraries/cabal-per-package.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Error:
     Internal libraries only supported with per-component builds.

diff --git a/cabal-testsuite/PackageTests/InternalLibraries/cabal.out b/cabal-testsuite/PackageTests/InternalLibraries/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/JS/JsSources/other-arch.out b/cabal-testsuite/PackageTests/JS/JsSources/other-arch.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/JS/JsSourcesExe/other-arch.out b/cabal-testsuite/PackageTests/JS/JsSourcesExe/other-arch.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/ListBin/Script/cabal.out b/cabal-testsuite/PackageTests/ListBin/Script/cabal.out
@@ -1,4 +1,5 @@
 # cabal list-bin
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/ListBin/SelectedComponent/cabal.out b/cabal-testsuite/PackageTests/ListBin/SelectedComponent/cabal.out
@@ -1,4 +1,5 @@
 # cabal list-bin
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/MultiRepl/CabalTooOld/cabal.out b/cabal-testsuite/PackageTests/MultiRepl/CabalTooOld/cabal.out
@@ -1,6 +1,7 @@
 # cabal v2-update
 Downloading the latest package list from test-local-repo
 # cabal v2-repl
+Querying pkg-config database...
 Resolving dependencies...
 Error: [Cabal-7107]
 Could not resolve dependencies:

diff --git a/cabal-testsuite/PackageTests/MultiRepl/EnabledClosure/cabal.out b/cabal-testsuite/PackageTests/MultiRepl/EnabledClosure/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-repl
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/MultiRepl/EnabledSucc/cabal.out b/cabal-testsuite/PackageTests/MultiRepl/EnabledSucc/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-repl
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/MultiRepl/NotEnabledFail/cabal.multirepl-a.out b/cabal-testsuite/PackageTests/MultiRepl/NotEnabledFail/cabal.multirepl-a.out
@@ -1,4 +1,5 @@
 # cabal v2-repl
+Querying pkg-config database...
 Resolving dependencies...
 Error: [Cabal-7076]
 Cannot open a repl for multiple components at once. The targets 'pkg-a' and 'pkg-b' refer to different components..

diff --git a/cabal-testsuite/PackageTests/MultipleLibraries/Failing/cabal.out b/cabal-testsuite/PackageTests/MultipleLibraries/Failing/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Error: [Cabal-7107]
 Could not resolve dependencies:

diff --git a/cabal-testsuite/PackageTests/MultipleLibraries/Successful/cabal.out b/cabal-testsuite/PackageTests/MultipleLibraries/Successful/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/MultipleLibraries/T6083Post/cabal.out b/cabal-testsuite/PackageTests/MultipleLibraries/T6083Post/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/MultipleLibraries/T6083PostMixin/cabal.out b/cabal-testsuite/PackageTests/MultipleLibraries/T6083PostMixin/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/MultipleLibraries/T6083Pre/cabal.out b/cabal-testsuite/PackageTests/MultipleLibraries/T6083Pre/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/MultipleLibraries/T6083PreMixin/cabal.out b/cabal-testsuite/PackageTests/MultipleLibraries/T6083PreMixin/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-run
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/MultipleLibraries/T6894/cabal.out b/cabal-testsuite/PackageTests/MultipleLibraries/T6894/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-build
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/NewBuild/CmdBench/MultipleBenchmarks/cabal.out b/cabal-testsuite/PackageTests/NewBuild/CmdBench/MultipleBenchmarks/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-bench
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/NewBuild/CmdBench/OptionsFlag/cabal.out b/cabal-testsuite/PackageTests/NewBuild/CmdBench/OptionsFlag/cabal.out
@@ -1,4 +1,5 @@
 # cabal v2-bench
+Querying pkg-config database...
 Resolving dependencies...
 Build profile: -w ghc-<GHCVER> -O1
 In order, the following will be built:

diff --git a/cabal-testsuite/PackageTests/NewBuild/CmdBench/WarningRTS/cabal.out b/cabal-testsuite/PackageTests/NewBuild/CmdBench/WarningRTS/cabal.out
@@ -1,4 +1,5 @@
 # cabal bench
+Querying pkg-config database...
 Resolving dependencies...
 Warning: Some RTS options were found standalone, which affect cabal and not the binary. Please note that +RTS inside the --benchmark-options argument suffices if your goal is to affect the benchmarked binary. For example, use "cabal test --benchmark-options='+RTS -N'" to pass the '-N' RTS option to your binary.
 Build profile: -w ghc-<GHCVER> -O1