fix the sys not found error when importing sd_samplers that appeared after PR

modules/paths.py

@@ -15,21 +15,24 @@ for possible_sd_path in possible_sd_paths:
 assert sd_path is not None, "Couldn't find Stable Diffusion in any of: " + str(possible_sd_paths)
 
 path_dirs = [
-    (sd_path, 'ldm', 'Stable Diffusion'),
-    (os.path.join(sd_path, '../taming-transformers'), 'taming', 'Taming Transformers'),
-    (os.path.join(sd_path, '../CodeFormer'), 'inference_codeformer.py', 'CodeFormer'),
-    (os.path.join(sd_path, '../BLIP'), 'models/blip.py', 'BLIP'),
-    (os.path.join(sd_path, '../latent-diffusion'), 'LDSR.py', 'LDSR'),
-    (os.path.join(sd_path, '../k-diffusion'), 'k_diffusion/sampling.py', 'k_diffusion'),
+    (sd_path, 'ldm', 'Stable Diffusion', []),
+    (os.path.join(sd_path, '../taming-transformers'), 'taming', 'Taming Transformers', []),
+    (os.path.join(sd_path, '../CodeFormer'), 'inference_codeformer.py', 'CodeFormer', []),
+    (os.path.join(sd_path, '../BLIP'), 'models/blip.py', 'BLIP', []),
+    (os.path.join(sd_path, '../latent-diffusion'), 'LDSR.py', 'LDSR', []),
+    (os.path.join(sd_path, '../k-diffusion'), 'k_diffusion/sampling.py', 'k_diffusion', ["atstart"]),
 ]
 
 paths = {}
 
-for d, must_exist, what in path_dirs:
+for d, must_exist, what, options in path_dirs:
     must_exist_path = os.path.abspath(os.path.join(script_path, d, must_exist))
     if not os.path.exists(must_exist_path):
         print(f"Warning: {what} not found at path {must_exist_path}", file=sys.stderr)
     else:
         d = os.path.abspath(d)
-        sys.path.append(d)
+        if "atstart" in options:
+            sys.path.insert(0, d)
+        else:
+            sys.path.append(d)
         paths[what] = d

modules/sd_samplers.py

@@ -4,8 +4,6 @@ import torch
 import tqdm
 from PIL import Image
 import inspect
-from modules.paths import paths
-sys.path.insert(0, paths["k_diffusion"])
 import k_diffusion.sampling
 import ldm.models.diffusion.ddim
 import ldm.models.diffusion.plms