(cabal init) Suggest BSD-3-Clause as default (#8764)

* (cabal init) make BSD-3-Clause default

* Add changelog for #8757

* Modify test to incorporate new BDS-3 default

---------

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

cabal-install/src/Distribution/Client/Init/Interactive/Command.hs

@@ -336,7 +336,7 @@ licensePrompt flags = getLicense flags $ do
     let csv = fromFlagOrDefault defaultCabalVersion (cabalVersion flags)
     l <- promptList "Please choose a license"
       (licenses csv)
-      MandatoryPrompt
+      (DefaultPrompt "BSD-3-Clause")
       Nothing
       True
 

cabal-testsuite/PackageTests/Init/init-interactive.test.hs

@@ -6,7 +6,7 @@ main = cabalTest $
 
     buildOut <- withDirectory cwd $ do
       cabalWithStdin "init" ["-i"]
-        "2\n\n5\n\n\n2\n\n\n\n\n\n\n\n\n\n"
+        "2\n\n5\n\n\n\n\n\n\n\n\n\n\n\n\n"
       setup "configure" []
       setup' "build" ["app"]
 

changelog.d/issue-8757

+synopsis: cabal init: suggest BSD-3 as default license
+packages: cabal-install
+prs: #8764
+issues: #8757