computer-setup

Computer Setup

Make sure the development prerequisites are installed: a package manager, mise, podman, and GH CLI. On macOS and Linux this skill points the user at a one-liner installer instead of walking them through every step. Idempotent — safe to re-run.

1. Detect platform

uname -s 2>/dev/null || echo Windows

• Darwin → follow macOS / Linux (one-liner)
• Linux → follow macOS / Linux (one-liner)
• MINGW64_NT* / MSYS_NT* or similar → follow Windows

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macOS / Linux (one-liner)

1. Check whether tools are already installed

command -v podman && command -v mise && command -v gh

On macOS, also check Homebrew:

command -v brew

If everything resolves, skip to Phase 2 — Verify.

2. Run the one-liner installer

If anything of the above tools are missing, tell the user to open a fresh OS terminal (NOT this Claude session) and run:

/bin/bash -c "$(curl -fsSL https://cofounder.giba.tech/install.sh)"

Why a separate OS terminal: the installer needs sudo for some steps (Homebrew on macOS, package install on Linux/WSL). Running it outside Claude lets the user type their password directly when prompted.

How to tell the user to open a new terminal — the wording depends on their platform. Detect WSL on Linux with:

{ grep -qi microsoft /proc/version 2>/dev/null \
  || grep -qi microsoft /proc/sys/kernel/osrelease 2>/dev/null; } \
  && echo WSL

Platform	What to tell the user (translate to their language)
macOS	Open Spotlight (⌘+Space), type Terminal, press Enter.
Linux (native, no WSL)	Open the Terminal app from the application menu (e.g. Ctrl+Alt+T on Ubuntu/GNOME).
WSL on Windows	Open the Start menu, type Ubuntu, press Enter. This must be a fresh Ubuntu shell — not PowerShell or Command Prompt.

The installer:

• Detects OS
• Installs Homebrew in macOS
• Installs podman, mise, gh
• Initializes and starts the podman machine in macOS
• Is idempotent — re-running is a no-op for anything already installed.

After it finishes, ask the user to:

1. Open another fresh OS terminal so the updated PATH is picked up. Use the same per-platform wording from the table above.
2. cd back into the project directory.
3. Run claude again.

The session will resume here and the next steps in the cofounder setup sequence will pick up.

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Windows

Note: It may seem odd to use bash and .bashrc on Windows — Claude Code Desktop uses git bash as its shell environment.

1. Verify WSL2

wsl --status

Interpret the entire output, not just the version line. "Default Version: 2" may appear even when WSL2 is not yet functional — the output can still contain errors indicating that required Windows features are missing. Read all lines carefully and watch for any message about unsupported configurations, missing optional components, or virtualization not being enabled.

For example, the output may show "Default Version: 2" alongside errors like:

WSL2 is not supported with your current machine configuration.
Please enable the "Virtual Machine Platform" optional component and ensure
virtualization is enabled in the BIOS.
Enable "Virtual Machine Platform" by running: wsl.exe --install --no-distribution

If any such error appears, tell the user to:

1. Open PowerShell as Administrator
2. Run the command indicated in the error output (in the example above, wsl.exe --install --no-distribution) and wait for it to complete
3. Reboot the computer
4. Return to Claude Code after reboot

If WSL2 is not installed at all or the default version is not 2, tell the user to:

1. Open PowerShell as Administrator
2. Run wsl --install
3. Reboot the computer
4. Return to Claude Code after reboot

After reboot, re-run wsl --status to confirm. A second install run may be needed in some cases.

2. Install Podman

podman version

If the command is not found, install it yourself:

winget install --exact --id RedHat.Podman --accept-source-agreements --accept-package-agreements

This is a no-op if Podman is already installed.

3. Install mise

mise version

If the command is not found, install it yourself:

winget install --exact --id jdx.mise --accept-source-agreements --accept-package-agreements

This is a no-op if mise is already installed.

4. Install GH CLI

gh version

If the command is not found, install it yourself:

winget install --exact --id GitHub.cli --accept-source-agreements --accept-package-agreements

This is a no-op if GH CLI is already installed.

5. Restart Claude

Choose one of the following based on what happened in the previous steps:

1. If step 1 asked the user to install or reinstall WSL (i.e., they had to run wsl --install or wsl.exe --install --no-distribution): tell the user to reboot their computer and relaunch Claude after the reboot completes.

2. If steps 2–4 installed podman, mise, and/or GH CLI (but WSL was already fine): ask the user to restart Claude so the new PATH takes effect and the session restarts with the cofounder agent as the main thread.

   • Desktop app: Select Arquivo (File) > Sair (Exit) on the top left. Tell them to come back to this same chat session after restarting — they can find it by selecting the Código (Code) tab and looking for past sessions in the sidebar.
   • CLI (claude command): Type /exit to quit, then close and reopen the terminal (or PowerShell) so the environment variables are reloaded with the updated PATH. After that, run claude again from the same project directory.

3. If none of the above (all tools were already installed): no restart is needed — proceed directly to Phase 2.

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Phase 2 — Verify and set up

Verify Podman

podman version

If the output shows both client and server versions, podman is ready. On macOS or Windows, if it errors about needing a Linux VM:

podman machine init

Add --memory 1024 if the computer has less than 16 GB of RAM.

IMPORTANT — Rosetta dialog (macOS): podman machine start may trigger a macOS dialog to install Rosetta, possibly hidden behind other windows. Claude cannot interact with it. Before issuing the command, ask the user to watch for it and press Install. The command hangs until Rosetta is installed.

podman machine start

The one-liner installer already runs init and start on macOS. These steps are only needed if it failed or if the user is on Windows.

Podman Connectivity Test

podman run -d --name podman-setup-test-nginx -p 18080:80 docker.io/library/nginx:alpine

Wait a few seconds, then:

curl -s -o /dev/null -w '%{http_code}' http://localhost:18080/

Expect 200. Clean up:

podman rm -f podman-setup-test-nginx

Verify mise and GH CLI

mise x node@24 -- node --version

gh version

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Marketplace Auto-Update

Platform-independent. Find this plugin's marketplace name, then read ~/.claude/plugins/known_marketplaces.json. If the matching entry lacks "autoUpdate": true, add it and write the file back. Preserve all other fields.

Example:

"giba-plugins": {
    "source": { ... },
    "installLocation": "...",
    "lastUpdated": "...",
    "autoUpdate": true
}

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Troubleshooting

• Tools not found after the one-liner ran: open a brand-new OS terminal so PATH is reloaded, then run claude again. On Linux/WSL, shell rc files only reload in new shells. On WSL specifically, the new terminal must be a fresh Ubuntu terminal (Start menu → type Ubuntu → Enter), not a reused tab.
• Podman machine fails to start (macOS/Windows): Check that virtualization is enabled (sysctl kern.hv_support on macOS). Ensure no conflicting hypervisor (e.g., Docker Desktop) holds the VM socket.
• WSL issues on Windows: "Default Version: 2" does not guarantee WSL2 is working — errors about missing components may follow. If the output mentions "Virtual Machine Platform" or similar, ask the user to run wsl.exe --install --no-distribution in PowerShell as Administrator, then reboot. Otherwise, use wsl --install.
• Connectivity test fails: The nginx container may need an extra second. Re-run the curl check. If it persists, check firewall rules and that port 18080 is free.
• Linux distro not recognized by the installer: install podman and gh manually using your distro's package manager, then re-run the one-liner — it will detect the existing tools and skip ahead.

Bundled Resources

• scripts/install.sh — one-liner installer for macOS and Linux. Served via redirect at https://cofounder.giba.tech/install.sh (see project CLAUDE.md).