Run in colab seems that there's a ModuleNotFoundError related to the MultiScaleDeformableAttention module.

[henry7213]

I modified the original Install detectron2 program as follows, because the original demo output:
ERROR: Could not find a version that satisfies the requirement detectron2 (from versions: none)
ERROR: No matching distribution found for detectron2**

!python -m pip install pyyaml==5.1
import sys, os, distutils.core
!git clone 'https://github.com/facebookresearch/detectron2'
dist = distutils.core.run_setup("./detectron2/setup.py")
!python -m pip install {' '.join([f"'{x}'" for x in dist.install_requires])}
sys.path.insert(0, os.path.abspath('./detectron2'))
!python -m pip install 'git+https://github.com/facebookresearch/detectron2.git'

When I run the following:

%cd /content/Mask2Former
import detectron2
from detectron2.utils.logger import setup_logger
setup_logger()
setup_logger(name="mask2former")

import numpy as np
import cv2
import torch
from google.colab.patches import cv2_imshow

from detectron2 import model_zoo
from detectron2.engine import DefaultPredictor
from detectron2.config import get_cfg
from detectron2.utils.visualizer import Visualizer, ColorMode
from detectron2.data import MetadataCatalog
from detectron2.projects.deeplab import add_deeplab_config
coco_metadata = MetadataCatalog.get("coco_2017_val_panoptic")

from mask2former import add_maskformer2_config

The error message I received is:
/content/Mask2Former

ModuleNotFoundError Traceback (most recent call last)
/content/Mask2Former/mask2former/modeling/pixel_decoder/ops/functions/ms_deform_attn_func.py in
21 try:
---> 22 import MultiScaleDeformableAttention as MSDA
23 except ModuleNotFoundError as e:

ModuleNotFoundError: No module named 'MultiScaleDeformableAttention'

During handling of the above exception, another exception occurred:

ModuleNotFoundError Traceback (most recent call last)
in <cell line: 26>()
24
25 # import Mask2Former project
---> 26 from mask2former import add_maskformer2_config

/content/Mask2Former/mask2former/init.py in
1 # Copyright (c) Facebook, Inc. and its affiliates.
2 from . import data # register all new datasets
----> 3 from . import modeling
4
5 # config

/content/Mask2Former/mask2former/modeling/init.py in
2 from .backbone.swin import D2SwinTransformer
3 from .pixel_decoder.fpn import BasePixelDecoder
----> 4 from .pixel_decoder.msdeformattn import MSDeformAttnPixelDecoder
5 from .meta_arch.mask_former_head import MaskFormerHead
6 from .meta_arch.per_pixel_baseline import PerPixelBaselineHead, PerPixelBaselinePlusHead

/content/Mask2Former/mask2former/modeling/pixel_decoder/msdeformattn.py in
17 from ..transformer_decoder.position_encoding import PositionEmbeddingSine
18 from ..transformer_decoder.transformer import _get_clones, _get_activation_fn
---> 19 from .ops.modules import MSDeformAttn
20
21

/content/Mask2Former/mask2former/modeling/pixel_decoder/ops/modules/init.py in
10 # Modified by Bowen Cheng from https://github.com/fundamentalvision/Deformable-DETR
11
---> 12 from .ms_deform_attn import MSDeformAttn

/content/Mask2Former/mask2former/modeling/pixel_decoder/ops/modules/ms_deform_attn.py in
22 from torch.nn.init import xavier_uniform_, constant_
23
---> 24 from ..functions import MSDeformAttnFunction
25 from ..functions.ms_deform_attn_func import ms_deform_attn_core_pytorch
26

/content/Mask2Former/mask2former/modeling/pixel_decoder/ops/functions/init.py in
10 # Modified by Bowen Cheng from https://github.com/fundamentalvision/Deformable-DETR
11
---> 12 from .ms_deform_attn_func import MSDeformAttnFunction
13

/content/Mask2Former/mask2former/modeling/pixel_decoder/ops/functions/ms_deform_attn_func.py in
27 "\tsh make.sh\n"
28 )
---> 29 raise ModuleNotFoundError(info_string)
30
31

and after running the previous step I have restart your runtime prior
Colab prompts to use:

shell
Copy code
%cd /content/Mask2Former/mask2former/modeling/pixel_decoder/ops
!sh make.sh
I've also tried it but the problem persists.