Move copying of .pth file into setup.py

Use a custom develop command to copy the .pth file into site-packages
when `python setup.py develop` is run - this is what pip does under the
hood for `pip install -e`.

No longer need desktop-app to locate site-packages, as the setuptools
command class knows it as `self.install_dir`.

The file is not removed by `pip uninstall`, but due to the `try:
except:`s in the `.pth` file, leaving it behind is harmless.

It is removed if the user runs whatever `setup.py` command undoies

Author: chrisjbillington

labscript_profile/create.py

@@ -5,7 +5,6 @@
 from pathlib import Path
 from subprocess import check_output
 from labscript_profile import LABSCRIPT_SUITE_PROFILE, default_labconfig_path
-import desktop_app
 
 _here = os.path.dirname(os.path.abspath(__file__))
 DEFAULT_PROFILE_CONTENTS = os.path.join(_here, 'default_profile')
@@ -54,15 +53,6 @@ def make_labconfig_file():
 
 
 def create_profile():
-    # copy the .pth file if necessary (only needed for ediatble installs)
-    pth_src = Path(_here).parent / 'labscript-suite.pth'
-    site_dir = desktop_app.environment.get_install_directory('labscript_profile')
-    if site_dir is not None and pth_src.parent != site_dir:
-        pth_dest = site_dir / 'labscript-suite.pth'
-        if pth_src.exists() and not pth_dest.exists():
-            shutil.copy2(pth_src, pth_dest)
-            print(f'Copied labscript-suite.pth file to {pth_dest}')
-
     src = Path(DEFAULT_PROFILE_CONTENTS)
     dest = Path(LABSCRIPT_SUITE_PROFILE)
     # Profile directory may exist already, but we will error if it contains any of the

setup.cfg

@@ -33,7 +33,6 @@ install_requires =
   scipy
   setuptools_scm
   zprocess>=2.18.0
-  desktop-app>=0.2.6
 
 [options.extras_require]
 docs = 

setup.py

@@ -1,9 +1,24 @@
 import os
 from setuptools import setup
+from setuptools.command.develop import develop
+from distutils import log
+
+
+class develop_command(develop):
+    """Custom develop command which installs the .pth file to site-packages for editable
+    installs."""
+    def run(self):
+        path = os.path.join(self.install_dir, 'labscript-suite.pth')
+        super().run()
+        if not self.uninstall:
+            log.info(f'Copying labscript-suite.pth to {path}')
+            if not self.dry_run:
+                self.copy_file('labscript-suite.pth', path)
+
 
 VERSION_SCHEME = {
     "version_scheme": os.getenv("SCM_VERSION_SCHEME", "guess-next-dev"),
     "local_scheme": os.getenv("SCM_LOCAL_SCHEME", "node-and-date"),
 }
 
-setup(use_scm_version=VERSION_SCHEME)
+setup(use_scm_version=VERSION_SCHEME, cmdclass={'develop': develop_command})