Add pip install with editable mode (#139)

* Add pip install

Signed-off-by: Adam Li <adam2392@gmail.com>

* Fix `spin install` logic

---------

Co-authored-by: Stefan van der Walt <stefanv@berkeley.edu>

Author: adam2392

.github/workflows/test.sh

@@ -48,6 +48,7 @@ prun spin example
 pip install sphinx
 prun spin docs
 
+
 ## Platform specialized tests
 
 if [[ $PLATFORM == linux ]]; then
@@ -57,3 +58,8 @@ fi
 # if [[ $PLATFORM == darwin ]]; then
 
 # if [[ $PLATFORM =~ ^win.* ]]; then
+
+
+prun spin install
+cd /tmp
+python -c 'import example_pkg; print(example_pkg.__version__)'

example_pkg/pyproject.toml

@@ -28,7 +28,8 @@ package = 'example_pkg'
 "Build" = [
   "spin.cmds.meson.build",
   "spin.cmds.meson.test",
-  "spin.cmds.build.sdist"
+  "spin.cmds.build.sdist",
+  "spin.cmds.pip.install",
 ]
 "Documentation" = [
   "spin.cmds.meson.docs"
@@ -44,3 +45,6 @@ package = 'example_pkg'
   "spin.cmds.meson.lldb"
 ]
 "Extensions" = [".spin/cmds.py:example"]
+"Install" = [
+  "spin.cmds.pip.install"
+]

spin/cmds/pip.py

@@ -0,0 +1,42 @@
+import click
+
+from .util import run as _run
+
+
+@click.command()
+@click.option(
+    "-v",
+    "--verbose",
+    is_flag=True,
+    default=False,
+    help="Print detailed build and installation output",
+)
+@click.option(
+    "--editable/--no-editable",
+    is_flag=True,
+    default=True,
+    help="Install in editable mode",
+)
+@click.argument("pip_args", nargs=-1)
+def install(pip_args, verbose, editable):
+    """💽 Build and install package using pip.
+
+    By default, the package is installed in editable mode.
+
+    Arguments after `--` are passed through to pip, e.g.:
+
+      spin install -- --no-clean
+
+    would translated to:
+
+      pip install . --no-build-isolation --editable --no-clean
+    """
+    pip_args = list(pip_args)
+    pip_cmd = ["pip", "install"]
+    pip_args += ["--no-build-isolation"]
+    if editable:
+        pip_args += ["--editable"]
+
+    pip_args = (["-v"] if verbose else []) + pip_args
+
+    _run(pip_cmd + pip_args + ["."], sys_exit=False, replace=True)