How to reduce duplication in the build-depends fields of a .cabal file?

Question

Here\'s a .cabal file:

Name:                myprogram
Version:             0.1
-- blah blah blah
Cabal-version:       >=1.9.2

Executable myprogram
  HS-s         


        

Answer 1

Since version 2.2 Cabal supports common stanzas, to dedup build info fields: https://cabal.readthedocs.io/en/latest/developing-packages.html#common-stanzas

cabal-version:       2.2
name:                myprogram
version:             0.1
-- blah blah blah

common deps
  build-depends: base ^>= 4.11,
                 -- long long list of packages
  ghc-options: -Wall

library
  import: deps
  exposed-modules: Foo

test-suite tests
  import: deps
  type: exitcode-stdio-1.0
  main-is: Tests.hs
  build-depends: foo