Aider Configuration - Japanese Development with Gemini

Configure Aider for Japanese-language AI-assisted coding using Google's Gemini 2.5 Flash model with architect mode, automatic commits, shell command suggestions, and vim keybindings.

Configuration Overview

This skill sets up Aider with:

Setup Instructions

1. **Create Aider configuration file** in your home directory:

```bash

Create .aider.conf.yml in your home directory

cat > ~/.aider.conf.yml << 'EOF'

model: gemini/gemini-2.5-flash-preview-05-20

editor-model: gemini/gemini-2.5-flash-preview-05-20

architect: true

chat-language: japanese

auto-commits: true

suggest-shell-commands: true

vim: true

analytics-disable: true

EOF

```

2. **Set up Gemini API access**:

```bash

Set your Google AI Studio API key

export GEMINI_API_KEY="your-api-key-here"

Add to your shell profile for persistence

echo 'export GEMINI_API_KEY="your-api-key-here"' >> ~/.bashrc # or ~/.zshrc

```

3. **Install Aider** (if not already installed):

```bash

pip install aider-chat

```

4. **Verify configuration**:

```bash

aider --show-settings

```

Usage

Start Aider in any git repository:

```bash

cd your-project

aider

```

Aider will automatically:

Key Features

Architect Mode

When enabled, Aider will:

1. First plan the code structure and approach

2. Then implement the changes

3. Provide better reasoning for complex refactors

Auto-commits

Every change Aider makes is automatically committed with AI-generated commit messages in Japanese, maintaining a clean git history.

Shell Command Suggestions

When you describe operations that could be done via shell commands, Aider will suggest appropriate bash/shell commands.

Japanese Language

All interactions, suggestions, and commit messages will be in Japanese, making it ideal for Japanese-speaking developers.

Configuration Options Reference

| Option | Value | Purpose |

|--------|-------|---------|

| `model` | `gemini/gemini-2.5-flash-preview-05-20` | Main AI model for coding |

| `editor-model` | `gemini/gemini-2.5-flash-preview-05-20` | Model for file editing |

| `architect` | `true` | Enable planning before implementation |

| `chat-language` | `japanese` | Use Japanese for all interactions |

| `auto-commits` | `true` | Auto-commit changes with AI messages |

| `suggest-shell-commands` | `true` | Suggest bash/shell commands |

| `vim` | `true` | Enable vim keybindings |

| `analytics-disable` | `true` | Disable usage analytics |

Alternative Model Options

If you want to use the more powerful Gemini 2.5 Pro model (higher cost, potentially better quality), modify the configuration:

```yaml

model: gemini/gemini-2.5-pro-preview-06-05

editor-model: gemini/gemini-2.5-flash-preview-05-20 # Keep Flash for edits to save cost

```

Notes

Troubleshooting

**Issue**: Aider doesn't use Japanese

**Issue**: Auto-commits not working

**Issue**: Model errors

**Issue**: Vim mode is confusing