Adopt Home Manager; manage starship, nix.conf, and opencode config

2026-10-08 22:17:14 +00:00
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+# nix-clanker-vm
+
+Nix configuration for this host (a Debian VM with standalone Nix).
+
+## What's here
+
+- `flake.nix` — root flake: aggregates packages and the Home Manager config.
+- `tinfoil-proxy/` — self-contained flake packaging `tinfoil-proxy` (Go).
+- `home/` — Home Manager configuration (user `user`): bash, shell env,
+  starship (declarative init), user-level nix.conf, installed packages
+  (opencode), managed opencode config.
+- `config/nix.conf` — source of truth for Nix settings (`sandbox`, flakes).
+- `config/starship.toml` — the host's starship preset (nerd-font-symbols).
+- `config/opencode.jsonc` — global opencode config, managed via `home.file`.
+- `install.sh` — applies `config/nix.conf` system-wide (sudo, backs up).
+
+## Apply
+
+```sh
+sudo ./install.sh       # update /etc/nix/nix.conf
+home-manager --flake ~/nix#user switch
+```
+
+The user-level `~/.config/nix/nix.conf` is managed by Home Manager via
+`home.file` in `home/default.nix`; the shell environment is owned by
+`programs.bash` (plus `hm-session-vars.sh`).
+
+## Build
+
+```sh
+nix build ~/nix
+nix build ~/nix/tinfoil-proxy
+```
+
+## Push to Codeberg
+
+```sh
+git remote add origin git@codeberg.org:kawaiipunk/nix-clanker-vm.git
+git branch -M main
+git push -u origin main
+```
+
+## Notes
+
+- `sandbox = true` is a restricted setting; when supplied from the user-level
+  config it is ignored with a warning (the daemon enforces it from
+  `/etc/nix/nix.conf`). This is cosmetic.
+- Existing pre-Home-Manager dotfiles were moved to `~/.bashrc.backup` and
+  `~/.profile.backup` during the first switch.