Fix output bin_dir directory shadowing source directory (#91) Fixes #88 In the test case added in this PR, the sandbox contains the following: ``` sandbox/.../execroot/_main/ |-- bazel-out/darwin_arm64-fastbuild/bin/ |-- nested/ |-- nested.mypy_cache/ |-- nested/ |-- __init__.py ``` The `bazel-out/darwin_arm64-fastbuild/bin/` directory is added to MYPYPATH as part of `generated_dirs` and is necessary in certain situations, but here, mypy finds the `nested/` directory in `bazel-out/` instead of the one in the current directory, because mypy searches MYPYPATH before CWD. In this PR, we explicitly add CWD first to ensure we look at source files before generated files

diff --git a/examples/demo/absolute_paths/bin/BUILD.bazel b/examples/demo/absolute_paths/bin/BUILD.bazel
new file mode 100644
index 0000000..1b979f3
--- /dev/null
+++ b/examples/demo/absolute_paths/bin/BUILD.bazel

@@ -0,0 +1,11 @@
+py_binary(
+    name = "main",
+    srcs = ["main.py"],
+    main = "main.py",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//absolute_paths/gen:bar",
+        "//absolute_paths/lib:foo",
+        "//absolute_paths/nested",
+    ],
+)

diff --git a/examples/demo/absolute_paths/bin/main.py b/examples/demo/absolute_paths/bin/main.py
new file mode 100644
index 0000000..c916056
--- /dev/null
+++ b/examples/demo/absolute_paths/bin/main.py

@@ -0,0 +1,7 @@
+from absolute_paths.lib.foo import Foo
+from absolute_paths.gen.bar import BAR
+from absolute_paths.nested import Nested
+
+print(Foo)
+print(BAR)
+print(Nested)

diff --git a/examples/demo/absolute_paths/gen/BUILD.bazel b/examples/demo/absolute_paths/gen/BUILD.bazel
new file mode 100644
index 0000000..b8fdf3a
--- /dev/null
+++ b/examples/demo/absolute_paths/gen/BUILD.bazel

@@ -0,0 +1,11 @@
+genrule(
+    name = "generate_source",
+    outs = ["bar.py"],
+    cmd = "echo 'BAR = 0' > $(OUTS)",
+)
+
+py_library(
+    name = "bar",
+    srcs = ["bar.py"],
+    visibility = ["//visibility:public"],
+)

diff --git a/examples/demo/absolute_paths/lib/BUILD.bazel b/examples/demo/absolute_paths/lib/BUILD.bazel
new file mode 100644
index 0000000..f977746
--- /dev/null
+++ b/examples/demo/absolute_paths/lib/BUILD.bazel

@@ -0,0 +1,5 @@
+py_library(
+    name = "foo",
+    srcs = ["foo.py"],
+    visibility = ["//visibility:public"],
+)

diff --git a/examples/demo/absolute_paths/lib/foo.py b/examples/demo/absolute_paths/lib/foo.py
new file mode 100644
index 0000000..100bc63
--- /dev/null
+++ b/examples/demo/absolute_paths/lib/foo.py

@@ -0,0 +1,2 @@
+class Foo:
+    pass

diff --git a/examples/demo/absolute_paths/nested/BUILD.bazel b/examples/demo/absolute_paths/nested/BUILD.bazel
new file mode 100644
index 0000000..ff58f15
--- /dev/null
+++ b/examples/demo/absolute_paths/nested/BUILD.bazel

@@ -0,0 +1,5 @@
+py_library(
+    name = "nested",
+    srcs = ["__init__.py"],
+    visibility = ["//visibility:public"],
+)

diff --git a/examples/demo/absolute_paths/nested/__init__.py b/examples/demo/absolute_paths/nested/__init__.py
new file mode 100644
index 0000000..a850e00
--- /dev/null
+++ b/examples/demo/absolute_paths/nested/__init__.py

@@ -0,0 +1,2 @@
+class Nested:
+    pass

diff --git a/mypy/private/mypy.bzl b/mypy/private/mypy.bzl
index 0c4dffc..7fea3be 100644
--- a/mypy/private/mypy.bzl
+++ b/mypy/private/mypy.bzl

@@ -147,9 +147,21 @@
         for import_ in imports_dirs.keys():
             generated_imports_dirs.append("{}/{}".format(generated_dir, import_))
 
-    # types need to appear first in the mypy path since the module directories
-    # are the same and mypy resolves the first ones, first.
-    mypy_path = ":".join(sorted(types) + sorted(external_deps) + sorted(imports_dirs) + sorted(generated_dirs) + sorted(generated_imports_dirs) + sorted(pyi_dirs))
+    mypy_path = ":".join(
+        # normally, mypy looks in the current directory last, but we explicitly want
+        # to check the current directory first, to avoid issues where mypy finds the
+        # output bin_dir from `generated_dirs` first
+        # https://github.com/theoremlp/rules_mypy/issues/88
+        ["."] +
+        # types need to appear first in the mypy path since the module directories
+        # are the same and mypy resolves the first ones, first.
+        sorted(types) +
+        sorted(external_deps) +
+        sorted(imports_dirs) +
+        sorted(generated_dirs) +
+        sorted(generated_imports_dirs) +
+        sorted(pyi_dirs),
+    )
 
     output_file = ctx.actions.declare_file(ctx.rule.attr.name + ".mypy_stdout")