Add editable project location to pip list output

src/pip/_internal/commands/list.py

@@ -296,10 +296,12 @@ def format_for_columns(
         header = ["Package", "Version"]
 
     data = []
-    if options.verbose >= 1 or any(x.editable for x in pkgs):
+    if options.verbose >= 1:
         header.append("Location")
     if options.verbose >= 1:
         header.append("Installer")
+    if any(x.editable for x in pkgs):
+        header.append("Editable project location")
 
     for proj in pkgs:
         # if we're working on the 'outdated' list, separate out the
@@ -310,10 +312,11 @@ def format_for_columns(
             row.append(str(proj.latest_version))
             row.append(proj.latest_filetype)
 
-        if options.verbose >= 1 or proj.editable:
+        if options.verbose >= 1:
             row.append(proj.location or "")
         if options.verbose >= 1:
             row.append(proj.installer)
+        row.append(proj.editable_project_location or "")
 
         data.append(row)
 
@@ -333,5 +336,8 @@ def format_for_json(packages: "_ProcessedDists", options: Values) -> str:
         if options.outdated:
             info['latest_version'] = str(dist.latest_version)
             info['latest_filetype'] = dist.latest_filetype
+        editable_project_location = dist.editable_project_location
+        if editable_project_location:
+            info['editable_project_location'] = editable_project_location
         data.append(info)
     return json.dumps(data)