Turn on logging for setuptools_scm

dev/release/02-source-test.rb

@@ -41,6 +41,7 @@ def source(*targets)
       env["SOURCE_#{target}"] = "1"
     end
     output = sh(env, @script, @release_version, "0")
+    puts output
     sh("tar", "xf", "#{@tag_name}.tar.gz")
     output
   end
@@ -81,7 +82,9 @@ def test_csharp_git_commit_information
   def test_python_version
     source
     Dir.chdir("#{@tag_name}/python") do
-      sh("python3", "setup.py", "sdist")
+      ENV["SETUPTOOLS_SCM_DEBUG"] = "True"
+      puts sh("python3", "setup.py", "sdist")
+      puts sh("python3", "-m", "setuptools_scm")
       if on_release_branch?
         pyarrow_source_archive = "dist/pyarrow-#{@release_version}.tar.gz"
       else

dev/release/run-test.rb

@@ -27,5 +27,6 @@
 require_relative "test-helper"
 
 ENV["TEST_UNIT_MAX_DIFF_TARGET_STRING_SIZE"] = "1000000"
+ENV["SETUPTOOLS_SCM_DEBUG"] = "True"
 
 exit(Test::Unit::AutoRunner.run(true, test_dir.to_s))

python/pyproject.toml

@@ -72,3 +72,4 @@ pyarrow = ["*.pxd", "*.pyx", "includes/*.pxd"]
 root = '..'
 version_file = 'pyarrow/_generated_version.py'
 version_scheme = 'guess-next-dev'
+relative_to = "pyproject.toml"