diff --git a/inline-r/inline-r.cabal b/inline-r/inline-r.cabal
index 04e7f41a..e483772e 100644
--- a/inline-r/inline-r.cabal
+++ b/inline-r/inline-r.cabal
@@ -39,7 +39,29 @@ source-repository head
   location: git://github.com/tweag/HaskellR.git
   subdir: inline-r
 
+common common-config
+  ghc-options: -Werror=unused-packages -Wall
+  default-language: Haskell2010
+
+common common-test-and-benchmark-config
+  import: common-config
+  ghc-options: -threaded
+  hs-source-dirs: tests
+
+common common-test-suite-deps
+  build-depends:
+    inline-r,
+    base >=4.6 && <5,
+    tasty-hunit >=0.4.1 && <0.11,
+
+common common-benchmark-deps
+  build-depends:
+    inline-r,
+    base >=4.6 && <5,
+    criterion >=0.8 && <1.7,
+
 library
+  import: common-config
   exposed-modules:
     Control.Memory.Region
     Data.Vector.SEXP
@@ -88,7 +110,6 @@ library
     heredoc >=0.2 && <0.3,
     inline-c >=0.6 && <0.10,
     mtl >=2.1 && <2.4,
-    pretty >=1.1 && <1.2,
     primitive >=0.5 && <0.9,
     process >=1.2 && <1.7,
     reflection >=2 && <2.2,
@@ -96,9 +117,6 @@ library
     template-haskell >=2.8 && <2.21,
     temporary >=1.2 && <1.4,
     text >=0.11 && <2.1,
-    th-lift >=0.6 && <0.9,
-    th-orphans >=0.8 && <0.14,
-    transformers >=0.3 && <0.7,
     vector >=0.10 && <0.14,
   if impl(ghc <9)
     build-depends:
@@ -111,7 +129,6 @@ library
   includes: cbits/missing_r.h
   c-sources: cbits/missing_r.c
   include-dirs: cbits
-  default-language: Haskell2010
   other-extensions:
     CPP
     ForeignFunctionInterface
@@ -125,31 +142,26 @@ library
   ghc-options: -freduction-depth=32
   --- We don't use ticks for promoted constructors, because we use
   --- promoted constructors heavily and because they confuse hsc2hs.
-  ghc-options: -Wall -fno-warn-unticked-promoted-constructors
+  ghc-options: -fno-warn-unticked-promoted-constructors
 
 test-suite tests
-  main-is: tests.hs
+  import:
+    common-test-and-benchmark-config,
+    common-test-suite-deps,
   type: exitcode-stdio-1.0
+  main-is: tests.hs
   build-depends:
-    inline-r,
-    base >=4.6 && <5,
     bytestring >=0.10 && <0.12,
     directory >=1.2 && <1.4,
-    filepath >=1.3 && <1.5,
     heredoc >=0.2 && <0.3,
     ieee754 >=0.7 && <0.9,
-    mtl >=2.0 && <2.4,
-    process >=1.2 && <1.7,
     quickcheck-assertions >=0.1.1 && <0.4,
     singletons >=0.10 && <3.1,
-    strict >=0.3.2 && <0.6,
     tasty >=0.11 && <1.5,
     tasty-expected-failure >=0.11 && <0.13,
-    tasty-golden >=2.3 && <2.4,
     tasty-hunit >=0.4.1 && <0.11,
     tasty-quickcheck >=0.4.1 && <0.11,
     temporary >=1.2 && <1.4,
-    text >=0.11 && <2.1,
     vector >=0.12.3.1 && <0.14,
   if !os(windows)
     build-depends: unix >=2.5 && <2.9,
@@ -161,92 +173,68 @@ test-suite tests
     Test.Regions
     Test.Vector
     Test.Matcher
-  ghc-options: -Wall -threaded
-  hs-source-dirs: tests
-  default-language: Haskell2010
 
 test-suite test-qq
-  main-is: test-qq.hs
+  import:
+    common-test-and-benchmark-config,
+    common-test-suite-deps,
   type: exitcode-stdio-1.0
+  main-is: test-qq.hs
   build-depends:
-    inline-r,
-    base >=4.6 && <5,
     mtl >=2.0 && <2.4,
-    process >=1.2 && <1.7,
-    tasty-hunit >=0.4.1 && <0.11,
     singletons >=0.9 && <3.1,
     text >=0.11 && <2.1,
-  ghc-options: -Wall -threaded
-  hs-source-dirs: tests
-  default-language: Haskell2010
 
 test-suite test-shootout
-  main-is: test-shootout.hs
+  import:
+    common-test-and-benchmark-config,
+    common-test-suite-deps,
   type: exitcode-stdio-1.0
+  main-is: test-shootout.hs
   other-modules: Test.Scripts
   build-depends:
-    inline-r,
-    base >=4.6 && <5,
     filepath >=1.3 && <1.5,
     process >=1.2 && <1.7,
     silently >=1.2 && <1.3,
-    tasty >=0.3 && <1.5,
-    tasty-hunit >=0.4.1 && <0.11,
+    tasty >=0.11 && <1.5,
     template-haskell >=2.8 && <2.21,
-  ghc-options: -Wall -threaded
-  hs-source-dirs: tests
-  default-language: Haskell2010
   if os(windows)
     buildable: False
 
 test-suite test-env1
-  main-is: test-env1.hs
+  import:
+    common-test-and-benchmark-config,
+    common-test-suite-deps,
   type: exitcode-stdio-1.0
+  main-is: test-env1.hs
   build-depends:
-    inline-r,
-    base >=4.6 && <5,
-    tasty >=0.3 && <1.5,
-    tasty-hunit >=0.4.1 && <0.11,
-  ghc-options: -Wall -threaded
-  hs-source-dirs: tests
-  default-language: Haskell2010
+    tasty >=0.11 && <1.5,
 
 test-suite test-env2
-  main-is: test-env2.hs
+  import:
+    common-test-and-benchmark-config,
+    common-test-suite-deps,
   type: exitcode-stdio-1.0
+  main-is: test-env2.hs
   build-depends:
-    inline-r,
-    base >=4.6 && <5,
-    tasty >=0.3 && <1.5,
-    tasty-hunit >=0.4.1 && <0.11,
-  ghc-options: -Wall -threaded
-  hs-source-dirs: tests
-  default-language: Haskell2010
+    tasty >=0.11 && <1.5,
 
 benchmark bench-qq
+  import:
+    common-test-and-benchmark-config,
+    common-benchmark-deps,
   main-is: bench-qq.hs
   type: exitcode-stdio-1.0
   build-depends:
-    inline-r,
-    base >=4.6 && <5,
-    criterion >=0.8 && <1.7,
     filepath >=1.3 && <1.5,
-    process >=1.2 && <1.7,
     template-haskell >=2.8 && <2.21,
-  ghc-options: -Wall -threaded
-  hs-source-dirs: tests
-  default-language: Haskell2010
 
 benchmark bench-hexp
+  import:
+    common-test-and-benchmark-config,
+    common-benchmark-deps,
   main-is: bench-hexp.hs
   type: exitcode-stdio-1.0
   build-depends:
-    inline-r,
-    base >=4.6 && <5,
-    criterion >=0.8 && <1.7,
     primitive >=0.5 && <0.9,
-    vector >=0.10 && <0.14,
     singletons >=2.7 && <3.1,
-  ghc-options: -Wall -threaded
-  hs-source-dirs: tests
-  default-language: Haskell2010