fix: better build and simpler README (#97)

README.md

@@ -9,6 +9,16 @@ Hist is a analyst friendly front-end for
 [boost-histogram](https://github.com/scikit-hep/boost-histogram), designed for
 Python 3.6+.
 
+## Installation
+
+You can install this library from [PyPI](https://pypi.org/project/hist/) with pip:
+
+```bash
+python3 -m pip install "hist[plot]"
+```
+
+If you do not need the plotting features, you can skip the `[plot]` extra:
+
 ## Features
 
 Hist currently provides everything boost-histogram provides, and the following enhancements:
@@ -37,20 +47,6 @@ Hist currently provides everything boost-histogram provides, and the following e
 - Notebook ready: Hist has gorgeous in-notebook representation.
   - No dependencies required
 
-## Installation
-
-You can install this library from [PyPI](https://pypi.org/project/hist/) with pip:
-
-```bash
-python3 -m pip install "hist[plot]"
-```
-
-If you do not need the plotting features, you can skip the `[plot]` extra:
-
-```bash
-python3 -m pip install hist
-```
-
 ## Usage
 
 ```python

pyproject.toml

@@ -1,5 +1,6 @@
 [build-system]
 requires = ["wheel", "setuptools>=42", "setuptools_scm[toml]>=3.4"]
+build-backend = "setuptools.build_meta"
 
 [tool.setuptools_scm]
 write_to = "src/hist/version.py"