Use python3/pip3 so we don't have to have python/pip symlinks

To reduce ambiguity, by default the compiled output from python 3
results in the commands `python3` / `pip3`. Often wrapper tooling will
create additional symlinks of `python`/`pip` pointing at these, but they
aren't the out-of-the-box default when compiling Python straight from
source.

In our case, `pyenv` _does_ add these symlinks. However, if we move away
from using `pyenv install` to another method (:wink:), then life will be simpler
if we directly call `python3` / `pip3` because we won't need to create
symlinks.

python/helpers/build

@@ -18,4 +18,4 @@ cp -r \
  "$install_dir"
 
 cd "$install_dir"
-PYENV_VERSION=$1 pyenv exec pip --disable-pip-version-check install --use-pep517 -r "requirements.txt"
+PYENV_VERSION=$1 pyenv exec pip3 --disable-pip-version-check install --use-pep517 -r "requirements.txt"

python/lib/dependabot/python/file_parser.rb

@@ -133,7 +133,7 @@ def parsed_requirement_files
  write_temporary_dependency_files
 
  requirements = SharedHelpers.run_helper_subprocess(
- command: "pyenv exec python #{NativeHelpers.python_helper_path}",
+ command: "pyenv exec python3 #{NativeHelpers.python_helper_path}",
  function: "parse_requirements",
  args: [Dir.pwd]
  )

python/lib/dependabot/python/file_parser/pyproject_files_parser.rb

@@ -247,7 +247,7 @@ def parsed_pep621_dependencies
  write_temporary_pyproject
 
  SharedHelpers.run_helper_subprocess(
- command: "pyenv exec python #{NativeHelpers.python_helper_path}",
+ command: "pyenv exec python3 #{NativeHelpers.python_helper_path}",
  function: "parse_pep621_dependencies",
  args: [pyproject.name]
  )

python/lib/dependabot/python/file_parser/setup_file_parser.rb

@@ -60,7 +60,7 @@ def parsed_setup_file
  write_temporary_dependency_files
 
  requirements = SharedHelpers.run_helper_subprocess(
- command: "pyenv exec python #{NativeHelpers.python_helper_path}",
+ command: "pyenv exec python3 #{NativeHelpers.python_helper_path}",
  function: "parse_setup",
  args: [Dir.pwd]
  )
@@ -81,7 +81,7 @@ def parsed_sanitized_setup_file
  write_sanitized_setup_file
 
  requirements = SharedHelpers.run_helper_subprocess(
- command: "pyenv exec python #{NativeHelpers.python_helper_path}",
+ command: "pyenv exec python3 #{NativeHelpers.python_helper_path}",
  function: "parse_setup",
  args: [Dir.pwd]
  )

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

@@ -376,7 +376,7 @@ def deps_to_augment_hashes_for(updated_content, original_content)
 
  def package_hashes_for(name:, version:, algorithm:)
  SharedHelpers.run_helper_subprocess(
- command: "pyenv exec python #{NativeHelpers.python_helper_path}",
+ command: "pyenv exec python3 #{NativeHelpers.python_helper_path}",
  function: "get_dependency_hash",
  args: [name, version, algorithm]
  ).map { |h| "--hash=#{algorithm}:#{h['hash']}" }

python/lib/dependabot/python/file_updater/pipfile_file_updater.rb

@@ -326,7 +326,7 @@ def pipfile_hash_for(pipfile_content)
  SharedHelpers.in_a_temporary_directory do |dir|
  File.write(File.join(dir, "Pipfile"), pipfile_content)
  SharedHelpers.run_helper_subprocess(
- command: "pyenv exec python #{NativeHelpers.python_helper_path}",
+ command: "pyenv exec python3 #{NativeHelpers.python_helper_path}",
  function: "get_pipfile_hash",
  args: [dir]
  )

python/lib/dependabot/python/file_updater/poetry_file_updater.rb

@@ -232,7 +232,7 @@ def pyproject_hash_for(pyproject_content)
  write_temporary_dependency_files(pyproject_content)
 
  SharedHelpers.run_helper_subprocess(
- command: "pyenv exec python #{python_helper_path}",
+ command: "pyenv exec python3 #{python_helper_path}",
  function: "get_pyproject_hash",
  args: [dir]
  )

python/lib/dependabot/python/file_updater/requirement_replacer.rb

@@ -134,7 +134,7 @@ def hash_separator(requirement)
 
  def package_hashes_for(name:, version:, algorithm:)
  SharedHelpers.run_helper_subprocess(
- command: "pyenv exec python #{NativeHelpers.python_helper_path}",
+ command: "pyenv exec python3 #{NativeHelpers.python_helper_path}",
  function: "get_dependency_hash",
  args: [name, version, algorithm]
  ).map { |h| "--hash=#{algorithm}:#{h['hash']}" }