这个不太会。要不去issue上问一下？

paddlenlp官方AI绘画项目那有ckpt或者safetensors转成ppdiffuser的实现，直接fork拿来用就得了

from safetensors.paddle import load_file
import paddle
import os


def safetensors2pdpramas(filename):
    """
    weights of safatensors to pdparams's
    """
    device = 'gpu' if paddle.is_compiled_with_cuda() else 'cpu'
    if os.path.exists(filename.split('.safetensors')[0] + '.pdparams'):
        raise Exception('file existed!')
    w = load_file(filename, device=device)
    paddle.save(w, filename.split('.safetensors')[0] + '.pdparams')
    del w

# 待转换文件路径
filenames = [
    'SDXL/model/text_encoder/model_state.safetensors',
    'SDXL/model/text_encoder_2/model_state.safetensors',
    'SDXL/model/unet/model_state.safetensors',
    'SDXL/model/model_state.safetensors'
]
# 开始转换
for filename in filenames:
    try:
        safetensors2pdparams(filename)
    except Exception as e:
        print(e)
        continue