asepharyana-hub/docs/superpowers/specs/2026-05-26-remove-nix-docker-only-design.md

Hapus Nix, Docker-Only

Goal: Remove all Nix configuration and adapt CI/dev to Docker-only.

Scope:

• Delete: flake.nix, flake.lock, nix/, .envrc, .direnv/
• Modify: .github/workflows/docker-build-push.yml — remove Nix steps, move rust-api to Dockerfile build
• Modify: .vscode/settings.json — remove nixEnvSelector
• Modify: README.md — replace nix build with docker build

CI Changes:

• rust-api uses infra/docker/rust.Dockerfile (already exists)
• Remove cachix/install-nix-action, cachix/cachix-action, nix build step
• Remove flake.nix, flake.lock, nix/** from path triggers
• Update path filters: nix/apps/*.nix → infra/docker/*.Dockerfile
• Remove repository_dispatch Nix --override-input logic
• Add rust-api to Dockerfile case + push branch

Dev Workflow:

• Rust toolchain via rustup/rust-toolchain.toml in apps/rust/
• Dev via docker compose instead of process-compose