Add dbt-core formula (#390)

* Add dbt-core formula

Add a Homebrew formula for dbt-core v2.0.0-alpha.1, sourced from the
dbt-core GitHub release assets (macOS/Linux, arm64/x86_64). The release
ships a single `dbt-sa-cli` binary which is installed as `dbt`.

Enable the reciprocal `conflicts_with "dbt-core"` in the dbt (Fusion)
formula since both install the `dbt` binary.

Validated locally via a throwaway tap: brew style, install, test
(`dbt --version` -> dbt-core 2.0.0-alpha.1), and audit --new all pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* Add explicit version to dbt-core formula for consistency with dbt formula

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: tauhid621

Formula/dbt-core.rb

@@ -0,0 +1,38 @@
+class DbtCore < Formula
+  desc "Build analytics the way engineers build applications"
+  homepage "https://getdbt.com"
+  version "2.0.0-alpha.1"
+  license "Apache-2.0"
+
+  on_macos do
+    on_arm do
+      url "https://github.com/dbt-labs/dbt-core/releases/download/v2.0.0-alpha.1/dbt-core-2.0.0-alpha.1-aarch64-apple-darwin.tar.gz"
+      sha256 "10d52871b023bb4acfe08a94cd9ad66539093a2eb8157fc7c1e9ebb933f218a8"
+    end
+    on_intel do
+      url "https://github.com/dbt-labs/dbt-core/releases/download/v2.0.0-alpha.1/dbt-core-2.0.0-alpha.1-x86_64-apple-darwin.tar.gz"
+      sha256 "543463f9078f3b6125a2bab5fda8ff678114e7ccd7de1cfb0526c9fdb487d05d"
+    end
+  end
+
+  on_linux do
+    on_arm do
+      url "https://github.com/dbt-labs/dbt-core/releases/download/v2.0.0-alpha.1/dbt-core-2.0.0-alpha.1-aarch64-unknown-linux-gnu.tar.gz"
+      sha256 "83a3cabe2ec2588390fe64f94142b0a0eb8ebf48c90db05cdab1da5d7232789a"
+    end
+    on_intel do
+      url "https://github.com/dbt-labs/dbt-core/releases/download/v2.0.0-alpha.1/dbt-core-2.0.0-alpha.1-x86_64-unknown-linux-gnu.tar.gz"
+      sha256 "8342e0027a0df9175c24255282f7db1504582d2efb4fd5472215a2a34857032e"
+    end
+  end
+
+  conflicts_with "dbt", because: "both formulas install the `dbt` binary"
+
+  def install
+    bin.install "dbt-sa-cli" => "dbt"
+  end
+
+  test do
+    assert_match version.to_s, shell_output("#{bin}/dbt --version")
+  end
+end

Formula/dbt.rb

@@ -1,5 +1,5 @@
 class Dbt < Formula
-  desc "Fast and enriched dbt compiler and runner"
+  desc "Build analytics the way engineers build applications"
   homepage "https://getdbt.com"
   version "2.0.0-preview.181"
   license :cannot_represent
@@ -26,7 +26,7 @@ class Dbt < Formula
     end
   end
 
-  # conflicts_with "dbt-core", because: "both formulas install the `dbt` binary"
+  conflicts_with "dbt-core", because: "both formulas install the `dbt` binary"
 
   def install
     bin.install "dbt"