remove pip as a build-system dependency in pyproject.toml

Author: jmalkin

pyproject.toml

@@ -2,7 +2,6 @@
 requires = ["wheel",
             "setuptools >= 30.3.0",
             "cmake >= 3.16",
-            "pip >= 10.0",
             "pybind11[global] >= 2.6.0"]
 build-backend = "setuptools.build_meta"
 

python/README.md

@@ -76,7 +76,7 @@ The only developer-specific instructions relate to running unit tests.
 
 ### Unit tests
 
-The Python unit tests are run via `tox`, with no arguments, from the project root directory -- not the python subdirectory. Tox creates a temporary virtual environment in which to build and run teh unit tests. In the event you are missing the necessary pacakge, tox may be installed with `python3 -m pip install --upgrade tox`.
+The Python unit tests are run via `tox`, with no arguments, from the project root directory -- not the python subdirectory. Tox creates a temporary virtual environment in which to build and run the unit tests. In the event you are missing the necessary pacakge, tox may be installed with `python3 -m pip install --upgrade tox`.
 
 ## License
 

python/pybind11Path.cmd

@@ -1,3 +1,3 @@
 @echo off
 :: Takes path to the Python interpreter and returns the path to pybind11
-%1 -m pip show pybind11 | %1 -c "import sys,re;[sys.stdout.write(re.sub('^Location:\\s+','',line)) for line in sys.stdin if re.search('^Location:\\s+',line)]"
+%1 -c "import pybind11,sys;sys.stdout.write(pybind11.get_cmake_dir())"