Set up Meson build for a single Fortran component

This is WIP, but the project files are in the right place.

babelizer/data/{{cookiecutter.package_name}}/meson.build

@@ -0,0 +1,70 @@
+project('{{ cookiecutter.package_name }}', '{{ cookiecutter.language }}', 'cython', version: '{{ cookiecutter.package_version }}')
+
+py = import('python').find_installation(pure: false)
+fc = meson.get_compiler('fortran')
+
+python_inc = py.get_path('data') / 'include'
+numpy_inc = run_command(
+    py,
+    [
+        '-c',
+        'import numpy; print(numpy.get_include())'
+    ],
+    check: true
+).stdout().strip()
+incs = include_directories(
+    [
+        '{{ cookiecutter.package_name }}/lib',
+        python_inc,
+        numpy_inc,
+    ]
+)
+
+deps = [
+    fc.find_library('bmif'),
+    fc.find_library('heatf'),
+    fc.find_library('bmiheatf'),
+]
+
+{# This is temporary until I figure out how to do multiple components. #}
+{%- set babelized_class = 'HeatModelF' -%}
+
+srcs = [
+    '{{ cookiecutter.package_name }}/lib/bmi_interoperability.f90',
+    '{{ cookiecutter.package_name }}/lib/{{ babelized_class|lower }}.pyx',
+]
+
+# Files get copied to <python directory>/site-packages/<subdir>
+install_pkg_srcs = [
+    '{{ cookiecutter.package_name }}/__init__.py',
+    '{{ cookiecutter.package_name }}/_bmi.py',
+]
+py.install_sources(
+    install_pkg_srcs,
+    subdir: '{{ cookiecutter.package_name }}',
+)
+install_lib_srcs = [
+    '{{ cookiecutter.package_name }}/lib/__init__.py',
+    '{{ cookiecutter.package_name }}/lib/{{ babelized_class|lower }}.pyx',
+]
+py.install_sources(
+    install_lib_srcs,
+    subdir: '{{ cookiecutter.package_name }}/lib',
+)
+
+install_subdir(
+    'meta/{{ babelized_class }}',
+    install_dir: py.get_install_dir() / '{{ cookiecutter.package_name }}/data',
+)
+
+py.extension_module(
+    '{{ babelized_class|lower }}',
+    srcs,
+    dependencies: deps,
+    include_directories: incs,
+    install: true,
+    subdir: '{{ cookiecutter.package_name }}/lib',
+)
+
+# This is a temporary fix for editable installs.
+run_command('cp', '-r', '{{ cookiecutter.package_name }}/data', 'build')

babelizer/data/{{cookiecutter.package_name}}/pyproject.toml

@@ -1,5 +1,6 @@
 [build-system]
-requires = ["cython", "numpy", "setuptools", "wheel"]
+build-backend = "mesonpy"
+requires = ["cython", "numpy", "meson-python", "wheel"]
 
 [project]
 name = "{{cookiecutter.package_name}}"
@@ -39,6 +40,9 @@ homepage = "https://github.com/{{ cookiecutter.info.github_username }}/{{ cookie
 
 [project.optional-dependencies]
 dev = [
+  "meson",
+  "meson-python",
+  "ninja",
   "nox",
 ]
 docs = [