# custom_model.py
from transformers import PreTrainedModel, PretrainedConfig, AutoConfig, AutoModel
import torch.nn as nn
import subprocess

class CustomModelConfig(PretrainedConfig):
    model_type = "custom-model"
    def __init__(self, hidden_size=128, **kwargs):
        super().__init__(**kwargs)
        self.hidden_size = hidden_size


class CustomModel(PreTrainedModel):
    config_class = CustomModelConfig

    def __init__(self, config):
        super().__init__(config)
        self.linear = nn.Linear(config.hidden_size, config.hidden_size)
    
    def forward(self, input_ids):
        output = self.linear(input_ids)
        return output

AutoConfig.register("custom-model", CustomModelConfig)
AutoModel.register(CustomModelConfig, CustomModel)