feat: support 'virtual' dependencies (#201)

Fixes #213

---------

Co-authored-by: Alex Eagle <[email protected]>

Author: Matt Mackay

.bazelrc

@@ -7,6 +7,10 @@ test --test_output=errors
 # Define value used by tests
 build --define=SOME_VAR=SOME_VALUE
 
+# Use local rules_python
+# Enable with --config=dev
+common:dev --override_repository=rules_python=~/workspace/rules_python
+
 # Load any settings specific to the current user.
 # .bazelrc.user should appear in .gitignore so that settings are not shared with team members
 # This needs to be last statement in this

WORKSPACE

@@ -14,13 +14,15 @@ rules_py_dependencies()
 # Load the Python toolchain for rules_docker
 register_toolchains("//:container_py_toolchain")
 
-load("@rules_python//python:repositories.bzl", "python_register_toolchains")
+load("@rules_python//python:repositories.bzl", "py_repositories", "python_register_toolchains")
 
 python_register_toolchains(
     name = "python_toolchain",
     python_version = "3.9",
 )
 
+py_repositories()
+
 ############################################
 # Aspect gcc toolchain
 load("@aspect_gcc_toolchain//toolchain:repositories.bzl", "gcc_toolchain_dependencies")
@@ -47,6 +49,10 @@ load("@pypi//:requirements.bzl", "install_deps")
 
 install_deps()
 
+load("@django//:requirements.bzl", install_django_deps = "install_deps")
+
+install_django_deps()
+
 ################################
 # For running our own unit tests
 load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")

docs/rules.md

@@ -4,7 +4,7 @@ Users should *not* need to install these. If users see a load()
 statement from these, that's a bug in our distribution.
 """
 
-load("@bazel_tools//tools/build_defs/repo:http.bzl", _http_archive = "http_archive")
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_file", _http_archive = "http_archive")
 load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
 
 def http_archive(name, **kwargs):
@@ -90,3 +90,24 @@ def rules_py_internal_deps():
         strip_prefix = "rules_python-0.18.0/gazelle",
         url = "https://github.com/bazelbuild/rules_python/releases/download/0.18.0/rules_python-0.18.0.tar.gz",
     )
+
+    http_file(
+        name = "django_4_2_4",
+        urls = ["https://files.pythonhosted.org/packages/7f/9e/fc6bab255ae10bc57fa2f65646eace3d5405fbb7f5678b90140052d1db0f/Django-4.2.4-py3-none-any.whl"],
+        sha256 = "860ae6a138a238fc4f22c99b52f3ead982bb4b1aad8c0122bcd8c8a3a02e409d",
+        downloaded_file_path = "Django-4.2.4-py3-none-any.whl",
+    )
+
+    http_file(
+        name = "django_4_1_10",
+        urls = ["https://files.pythonhosted.org/packages/34/25/8a218de57fc9853297a1a8e4927688eff8107d5bc6dcf6c964c59801f036/Django-4.1.10-py3-none-any.whl"],
+        sha256 = "26d0260c2fb8121009e62ffc548b2398dea2522b6454208a852fb0ef264c206c",
+        downloaded_file_path = "Django-4.1.10-py3-none-any.whl",
+    )
+
+    http_file(
+        name = "sqlparse_0_4_0",
+        urls = ["https://files.pythonhosted.org/packages/10/96/36c136013c4a6ecb8c6aa3eed66e6dcea838f85fd80e1446499f1dabfac7/sqlparse-0.4.0-py3-none-any.whl"],
+        sha256 = "0523026398aea9c8b5f7a4a6d5c0829c285b4fbd960c17b5967a369342e21e01",
+        downloaded_file_path = "sqlparse-0.4.0-py3-none-any.whl",
+    )

internal_deps.bzl

@@ -16,12 +16,13 @@ py_wheel(
 )
 """
 
+# buildifier: disable=function-docstring
 def rules_py_internal_pypi_deps(interpreter):
     # Here we can see an example of annotations being applied to an arbitrary
     # package. For details on `package_annotation` and it's uses, see the
     # docs at @rules_python//docs:pip.md`.
 
-    PACKAGES = ["django", "colorama", "django"]
+    PACKAGES = ["django", "colorama"]
     ANNOTATIONS = {
         pkg: package_annotation(additive_build_content = PY_WHEEL_RULE_CONTENT)
         for pkg in PACKAGES
@@ -33,3 +34,9 @@ def rules_py_internal_pypi_deps(interpreter):
         python_interpreter_target = interpreter,
         requirements_lock = "//:requirements.txt",
     )
+
+    pip_parse(
+        name = "django",
+        python_interpreter_target = interpreter,
+        requirements_lock = "//py/tests/virtual/django:requirements.txt",
+    )