Support python uv as pip-compile compatible replacement

python/helpers/requirements.txt

@@ -7,6 +7,7 @@ plette==2.1.0
 poetry==1.8.2
 # TODO: Replace 3p package `toml` with 3.11's new stdlib `tomllib` once we drop support for Python 3.10.
 toml==0.10.2
+uv==0.2.24
 
 # Some dependencies will only install if Cython is present
 Cython==3.0.10

python/lib/dependabot/python/file_updater/pip_compile_file_updater.rb

@@ -96,13 +96,14 @@ def compile_new_requirement_files
         def compile_file(filename)
           # Shell out to pip-compile, generate a new set of requirements.
           # This is slow, as pip-compile needs to do installs.
-          options = pip_compile_options(filename)
+
+          options, command = pip_compile_options(filename)
           options_fingerprint = pip_compile_options_fingerprint(options)
 
-          name_part = "pyenv exec pip-compile " \
+          name_part = "#{command} " \
                       "#{options} -P " \
                       "#{dependency.name}"
-          fingerprint_name_part = "pyenv exec pip-compile " \
+          fingerprint_name_part = "#{command} " \
                                   "#{options_fingerprint} -P " \
                                   "<dependency_name>"
 
@@ -456,7 +457,13 @@ def pip_compile_options(filename)
             options += pip_compile_options_from_compiled_file(requirements_file)
           end
 
-          options.join(" ")
+          command = "pyenv exec pip-compile"
+          if (requirements_file = compiled_file_for_filename(filename)) &&
+             requirements_file.content.include?("autogenerated by uv")
+            command = "pyenv exec uv pip compile"
+          end
+
+          [options.join(" "), command]
         end
 
         def pip_compile_options_from_compiled_file(requirements_file)

python/lib/dependabot/python/update_checker/pip_compile_version_resolver.rb

@@ -91,12 +91,12 @@ def fetch_latest_resolvable_version_string(requirement:)
         def compile_file(filename)
           # Shell out to pip-compile.
           # This is slow, as pip-compile needs to do installs.
-          options = pip_compile_options(filename)
+          options, command = pip_compile_options(filename)
           options_fingerprint = pip_compile_options_fingerprint(options)
 
           run_pip_compile_command(
-            "pyenv exec pip-compile -v #{options} -P #{dependency.name} #{filename}",
-            fingerprint: "pyenv exec pip-compile -v #{options_fingerprint} -P <dependency_name> <filename>"
+            "#{command} -v #{options} -P #{dependency.name} #{filename}",
+            fingerprint: "#{command} -v #{options_fingerprint} -P <dependency_name> <filename>"
           )
 
           return true if dependency.top_level?
@@ -110,8 +110,8 @@ def compile_file(filename)
           # update_not_possible.
           write_original_manifest_files
           run_pip_compile_command(
-            "pyenv exec pip-compile #{options} #{filename}",
-            fingerprint: "pyenv exec pip-compile #{options_fingerprint} <filename>"
+            "#{command} #{options} #{filename}",
+            fingerprint: "#{command} #{options_fingerprint} <filename>"
           )
 
           true
@@ -201,12 +201,12 @@ def check_original_requirements_resolvable
               write_temporary_dependency_files(update_requirement: false)
 
               filenames_to_compile.each do |filename|
-                options = pip_compile_options(filename)
+                options, command = pip_compile_options(filename)
                 options_fingerprint = pip_compile_options_fingerprint(options)
 
                 run_pip_compile_command(
-                  "pyenv exec pip-compile #{options} #{filename}",
-                  fingerprint: "pyenv exec pip-compile #{options_fingerprint} <filename>"
+                  "#{command} #{options} #{filename}",
+                  fingerprint: "#{command} #{options_fingerprint} <filename>"
                 )
               end
 
@@ -251,7 +251,13 @@ def pip_compile_options(filename)
             options << "--output-file=#{requirements_file.name}"
           end
 
-          options.join(" ")
+          command = "pyenv exec pip-compile"
+          if (requirements_file = compiled_file_for_filename(filename)) &&
+             requirements_file.content.include?("autogenerated by uv")
+            command = "pyenv exec uv pip compile"
+          end
+
+          [options.join(" "), command]
         end
 
         def pip_compile_index_options

python/spec/dependabot/python/file_updater/pip_compile_file_updater_spec.rb

@@ -112,6 +112,17 @@
       end
     end
 
+    context "with a uv header" do
+      let(:manifest_fixture_name) { "unpinned_uv.in" }
+      let(:generated_fixture_name) { "pip_compile_uv_header.txt" }
+
+      it "upgrades attrs to latest" do
+        expect(updated_files.count).to eq(1)
+        expect(updated_files.first.content).to include("attrs==18.1.0")
+        expect(updated_files.first.content).to include("This file was autogenerated by uv")
+      end
+    end
+
     context "with a no-binary flag" do
       let(:manifest_fixture_name) { "no_binary.in" }
       let(:generated_fixture_name) { "pip_compile_no_binary.txt" }

python/spec/fixtures/pip_compile_files/unpinned_uv.in

@@ -0,0 +1,5 @@
+flaky
+pytest
+pytest-xdist
+mock
+Attrs

python/spec/fixtures/requirements/pip_compile_uv_header.txt

@@ -0,0 +1,22 @@
+# This file was autogenerated by uv via the following command:
+#    uv pip compile --output-file pip_compile_uv_header.txt unpinned_uv.in -P attrs==18.1.0
+attrs==18.1.0
+    # via -r unpinned_uv.in
+execnet==2.1.1
+    # via pytest-xdist
+flaky==3.8.1
+    # via -r unpinned_uv.in
+iniconfig==2.0.0
+    # via pytest
+mock==5.1.0
+    # via -r unpinned_uv.in
+packaging==24.1
+    # via pytest
+pluggy==1.5.0
+    # via pytest
+pytest==8.2.2
+    # via
+    #   -r unpinned_uv.in
+    #   pytest-xdist
+pytest-xdist==3.6.1
+    # via -r unpinned_uv.in