Merge pull request #19945 from botantony/cabal

dev-cmd/create: add `--cabal` switch

Author: MikeMcQuaid

Library/Homebrew/dev-cmd/create.rb

@@ -20,6 +20,8 @@ class Create < AbstractCommand
         EOS
         switch "--autotools",
                description: "Create a basic template for an Autotools-style build."
+        switch "--cabal",
+               description: "Create a basic template for a Cabal build."
         switch "--cask",
                description: "Create a basic template for a cask."
         switch "--cmake",
@@ -59,7 +61,7 @@ class Create < AbstractCommand
         switch "-f", "--force",
                description: "Ignore errors for disallowed formula names and names that shadow aliases."
 
-        conflicts "--autotools", "--cmake", "--crystal", "--go", "--meson", "--node",
+        conflicts "--autotools", "--cabal", "--cmake", "--crystal", "--go", "--meson", "--node",
                   "--perl", "--python", "--ruby", "--rust", "--zig", "--cask"
         conflicts "--cask", "--HEAD"
         conflicts "--cask", "--set-license"
@@ -163,6 +165,8 @@ def create_formula
           :crystal
         elsif args.go?
           :go
+        elsif args.cabal?
+          :cabal
         elsif args.meson?
           :meson
         elsif args.node?

Library/Homebrew/formula_creator.rb

@@ -138,7 +138,10 @@ class #{Formulary.class_s(name)} < Formula
           head "#{@url}"
         <% end %>
 
-        <% if @mode == :cmake %>
+        <% if @mode == :cabal %>
+          depends_on "cabal-install" => :build
+          depends_on "ghc" => :build
+        <% elsif @mode == :cmake %>
           depends_on "cmake" => :build
         <% elsif @mode == :crystal %>
           depends_on "crystal" => :build
@@ -172,7 +175,10 @@ class #{Formulary.class_s(name)} < Formula
 
         <% end %>
           def install
-        <% if @mode == :cmake %>
+        <% if @mode == :cabal %>
+            system "cabal", "v2-update"
+            system "cabal", "v2-install", *std_cabal_v2_args
+        <% elsif @mode == :cmake %>
             system "cmake", "-S", ".", "-B", "build", *std_cmake_args
             system "cmake", "--build", "build"
             system "cmake", "--install", "build"