Ticket #10176: easy_install.py.debug.patch

easy_install.py

@@ -29 +29 @@
     'main', 'get_exe_prefixes',
 ]
 
+
+import os
+if os.environ.get("SAGE_SETUPTOOLS_DEBUG","no")=="yes":
+    log.set_threshold(log.DEBUG)
+
+
 def samefile(p1,p2):
     if hasattr(os.path,'samefile') and (
         os.path.exists(p1) and os.path.exists(p2)
@@ -945 +951 @@
         if self.pth_file is None:
             return
 
+        log.info(
+            "Updating easy-install.pth file: \"%s\"",
+            self.pth_file.filename
+        )
+
         for d in self.pth_file[dist.key]:    # drop old entries
             if self.multi_version or d.location != dist.location:
                 log.info("Removing %s from easy-install.pth file", d)
+                # LL MARKER
                 self.pth_file.remove(d)
                 if d.location in self.shadow_path:
                     self.shadow_path.remove(d.location)
@@ -960 +972 @@
                 )
             else:
                 log.info("Adding %s to easy-install.pth file", dist)
+                # LL MARKER
                 self.pth_file.add(dist) # add new entry
                 if dist.location not in self.shadow_path:
                     self.shadow_path.append(dist.location)
@@ -1327 +1340 @@
         saw_import = False
         seen = dict.fromkeys(self.sitedirs)
         if os.path.isfile(self.filename):
+
+            log.debug(
+                "Loading .pth file \"%s\"...", self.filename
+            )
+
             for line in open(self.filename,'rt'):
                 if line.startswith('import'):
                     saw_import = True
@@ -1335 +1353 @@
                 self.paths.append(path)
                 if not path.strip() or path.strip().startswith('#'):
                     continue
+
+                log.debug(
+                    "    Path found: \"%s\"", path
+                )
+
                 # skip non-existent paths, in case somebody deleted a package
                 # manually, and duplicate paths as well
                 path = self.paths[-1] = normalize_path(
                     os.path.join(self.basedir,path)
                 )
+
+                log.debug(
+                    "    Normalized: \"%s\"", path
+                )
+                if not os.path.exists(path):
+                    log.debug(
+                        "    ... does not exist - skipping"
+                    )
+                elif path in seen:
+                    log.debug(
+                        "    ... already seen - skipping"
+                    )
+
                 if not os.path.exists(path) or path in seen:
                     self.paths.pop()    # skip it
                     self.dirty = True   # we cleaned up, so we're dirty now :)
@@ -1354 +1390 @@
     def save(self):
         """Write changed .pth file back to disk"""
         if not self.dirty:
+            log.debug(
+                "Not saving .pth file \"%s\" since it is clean (unmodified).",
+                self.filename
+            )
             return
 
+        log.debug(
+            "Saving .pth file \"%s\"...", self.filename
+        )
+
         data = '\n'.join(map(self.make_relative,self.paths))
         if data:
             log.debug("Saving %s", self.filename)
@@ -1401 +1445 @@
             if npath==self.basedir:
                 parts.append(os.curdir)
                 parts.reverse()
+                log.debug("    Making path relative: \"%s\" -> \"%s\"",
+                    path, sep.join(parts)
+                )
                 return sep.join(parts)
             npath, last = os.path.split(npath)
             parts.append(last)
         else:
+            log.debug("    Making path relative: \"%s\" (unchanged)",
+                path
+            )
             return path
 
 def get_script_header(script_text, executable=sys_executable, wininst=False):