From f2289c4223b0887f50b8e5acd3df9228c0fec1eb Mon Sep 17 00:00:00 2001
From: Yurii Rashkovskii <yrashk@gmail.com>
Date: Fri, 7 Feb 2025 17:14:47 -0800
Subject: [PATCH] Problem: building on macOS without --os flag

It'll fail because we can't autodetect the OS.

Solution: make macOS detectable but fail on anything but RedHat-based
(because that's the only systems we support right this moment)
---
 exe/pgpm              |  4 ++++
 lib/pgpm/os.rb        |  9 ++++++---
 lib/pgpm/os/darwin.rb | 15 +++++++++++++++
 3 files changed, 25 insertions(+), 3 deletions(-)
 create mode 100644 lib/pgpm/os/darwin.rb

diff --git a/exe/pgpm b/exe/pgpm
index ca78955..c026060 100755
--- a/exe/pgpm
+++ b/exe/pgpm
@@ -85,6 +85,10 @@ module Pgpm
             exit(1)
           end
 
+          unless os.is_a?(Pgpm::OS::RedHat)
+            puts "#{os.name} is not a supported OS at this moment"
+            exit(1)
+          end
           puts "Building #{pkgs.map { |p| "#{p.name}@#{p.version}" }.join(", ")} for Postgres #{matching_pgver}"
           selected_pgdist = Postgres::RedhatBasedPgdg.new(matching_pgver.to_s)
 
diff --git a/lib/pgpm/os.rb b/lib/pgpm/os.rb
index 949f2bb..8d00fc7 100644
--- a/lib/pgpm/os.rb
+++ b/lib/pgpm/os.rb
@@ -37,9 +37,12 @@ def with_scope(&block)
     end
 
     def self.auto_detect
-      return unless RUBY_PLATFORM =~ /linux$/
-
-      Pgpm::OS::Linux.auto_detect
+      if RUBY_PLATFORM =~ /linux$/
+        Pgpm::OS::Linux.auto_detect
+      else
+        RUBY_PLATFORM =~ /darwin/
+        Pgpm::OS::Darwin.auto_detect
+      end
     end
 
     def self.find(name)
diff --git a/lib/pgpm/os/darwin.rb b/lib/pgpm/os/darwin.rb
new file mode 100644
index 0000000..cf0f10b
--- /dev/null
+++ b/lib/pgpm/os/darwin.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module Pgpm
+  module OS
+    class Darwin < Pgpm::OS::Unix
+      def self.name
+        "darwin"
+      end
+
+      def self.auto_detect
+        new
+      end
+    end
+  end
+end