dream2nix VS flake-registry

(I'm on the flox team) we'd love to support that and it's something we've talked about! We already support auto-generation for some languages like Rust because they have a lockfile (e.g. Cargo.lock), but it's a bit trickier for a requirements.txt. We hope at some point to contribute to/integrate with upstream efforts like dream2nix which have auto-generation as their goal

How about dream2nix? I like to use the nix way, but there are many third nix ways

I'm not 100% sure, but looking at the docs [here](https://nix-community.github.io/dream2nix/subsystems/node.html#granular-pure-default) and the implementation [here](https://github.com/nix-community/dream2nix/tree/main/src/subsystems/nodejs/builders/granular-nodejs) it seems as it builds dependencies separately and symlinks (see `install-deps.py` those into a `node_modules` tree. I don't know much about Yarn's PNP (was doing more backend/devex last few years), but it sounds vaguely similar in that each package should be built once as a separate derivation and then symlinked to a big `node_modules`-as-a-symlink-tree derivation?

How are you building your NodeJS project with Nix right now? Recently I spot a new abstraction, it looks good but I havn't tried it yet: https://github.com/nix-community/dream2nix

dream2nix is a great package, that makes a nix-derivation out of node project with the minimal flake

The DavHau/dream2nix project aims to be a generic solution for this issue by splitting the problem into specific stages, each of which can be configured individually (e.g., changing the level of purity)

This happens because the default registry hosted at https://github.com/NixOS/flake-registry/ is unpinned (for good reason).

access-tokens = allow-dirty = true allow-import-from-derivation = true allow-new-privileges = false allow-symlinked-store = false allow-unsafe-native-code-during-evaluation = false allowed-impure-host-deps = allowed-uris = allowed-users = * auto-optimise-store = false bash-prompt = bash-prompt-suffix = build-hook = /nix/store/jnx8zlprxamvqnx2lg7vbkpl51gr56pb-nix-2.4pre20211006_53e4794/libexec/nix/build-remote build-poll-interval = 5 build-users-group = nixbld builders = builders-use-substitutes = false compress-build-log = true connect-timeout = 0 cores = 0 diff-hook = download-attempts = 5 enforce-determinism = true eval-cache = true experimental-features = nix-command flakes extra-platforms = i686-linux x86_64-v1-linux x86_64-v2-linux x86_64-v3-linux fallback = false filter-syscalls = true flake-registry = https://github.com/NixOS/flake-registry/raw/master/flake-registry.json fsync-metadata = true gc-reserved-space = 8388608 hashed-mirrors = http-connections = 25 http2 = true impersonate-linux-26 = false keep-build-log = true keep-derivations = true keep-env-derivations = false keep-failed = false keep-going = false keep-outputs = false log-lines = 10 max-build-log-size = 0 max-free = 18446744073709551615 max-jobs = 16 max-silent-time = 0 min-free = 0 min-free-check-interval = 5 nar-buffer-size = 33554432 narinfo-cache-negative-ttl = 3600 narinfo-cache-positive-ttl = 2592000 netrc-file = /etc/nix/netrc nix-path = /home/matt/.nix-defexpr/channels nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixos nixos-config=/etc/nixos/configuration.nix /nix/var/nix/profiles/per-user/root/channels plugin-files = post-build-hook = pre-build-hook = preallocate-contents = false print-missing = true pure-eval = true repeat = 0 require-sigs = true restrict-eval = false run-diff-hook = false sandbox = true sandbox-build-dir = /build sandbox-dev-shm-size = 50% sandbox-fallback = false sandbox-paths = /bin/sh=/nix/store/5p4jga61v4mg9pdrglj2hj76y5rbz02k-busybox-static-x86_64-unknown-linux-musl-1.32.1/bin/busybox secret-key-files = show-trace = false stalled-download-timeout = 300 store = auto substitute = true substituters = https://cache.nixos.org/ sync-before-registering = false system = x86_64-linux system-features = benchmark big-parallel kvm nixos-test tarball-ttl = 3600 timeout = 0 trace-function-calls = false trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= trusted-substituters = trusted-users = root use-case-hack = false use-registries = true use-sqlite-wal = true user-agent-suffix = warn-dirty = true

Nix just seems to have a lot of issues with centralized decision making and planning, which results in some fairly insane decisions and a general lack of any direction in the entire project. As one odd example, Dolstra's personal/work projects are in the very small list of flakes in the global registry, which is just not ok.