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Switch 17 flake inputs to npins for faster nix evaluation

Browse source 
flake.lock: 87 → 8 nodes (1595 → 164 lines)

Only 6 flake inputs remain: flake-parts, nixpkgs, nix-darwin,
home-manager, nixos-unified, agenix. Everything else is pinned
via npins and lazily evaluated through flake-compat, so
`nix develop` and `nix run` no longer fetch/resolve 80+ transitive
dependency nodes.

Modules are unchanged — npins-derived inputs are merged into the
`inputs` attrset passed to mkFlake, preserving the existing
`flake.inputs.foo` / `inputs.foo` interface.
This commit is contained in:
Sridhar Ratnakumar 2026-03-28 10:33:16 -04:00
parent 35ac61cfdc
commit e152445ec8
6 changed files with 545 additions and 1483 deletions
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82
flake.nix
View file

@ -1,63 +1,67 @@
{
description = "Srid's NixOS / nix-darwin configuration";
inputs = {
flake-parts.url = "github:hercules-ci/flake-parts";
# Principle inputs
# Principle inputs (kept minimal to speed up nix develop/run/shell)
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
nix-darwin.url = "github:LnL7/nix-darwin/master";
nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
home-manager.url = "github:nix-community/home-manager/master";
home-manager.inputs.nixpkgs.follows = "nixpkgs";
nixos-hardware.url = "github:NixOS/nixos-hardware";
nixos-unified.url = "github:srid/nixos-unified";
disko.url = "github:nix-community/disko";
disko.inputs.nixpkgs.follows = "nixpkgs";
agenix.url = "github:ryantm/agenix";
agenix.inputs = {
darwin.follows = "nix-darwin";
home-manager.follows = "home-manager";
nixpkgs.follows = "nixpkgs";
};
# Software inputs
github-nix-ci.url = "github:juspay/github-nix-ci";
nixos-vscode-server.flake = false;
nixos-vscode-server.url = "github:nix-community/nixos-vscode-server";
nix-index-database.url = "github:nix-community/nix-index-database";
nix-index-database.inputs.nixpkgs.follows = "nixpkgs";
# vira.url = "github:juspay/vira/github";
vira.url = "github:juspay/vira";
oc.url = "github:juspay/AI";
# landrun-nix.url = "github:srid/landrun-nix";
landrun-nix.url = "github:adrian-gierakowski/landrun-nix/darwin-implementation-via-sandbox-exec";
nix-agent-wire.url = "github:srid/nix-agent-wire";
jumphost-nix.url = "github:srid/jumphost-nix";
jumphost-nix.flake = false;
# KOLU
kolu.url = "github:juspay/kolu";
skills.url = "github:juspay/skills";
skills.flake = false;
# Neovim
nixvim.url = "github:nix-community/nixvim";
nixvim.inputs.nixpkgs.follows = "nixpkgs";
# Emanote & Imako
emanote.url = "github:srid/emanote";
imako.url = "github:srid/imako";
disc-scrape.url = "github:srid/disc-scrape";
# Devshell
git-hooks.url = "github:cachix/git-hooks.nix";
git-hooks.flake = false;
# Everything else is managed by npins (see ./npins/)
};
outputs = inputs@{ self, ... }:
inputs.flake-parts.lib.mkFlake { inherit inputs; } {
outputs = flakeInputs@{ self, ... }:
let
sources = import ./npins;
# Lazily evaluate a flake from npins source using flake-compat.
# The flake is only fetched/evaluated when its outputs are actually used,
# so `nix develop` and `nix run` stay fast.
callFlake = src: (import sources.flake-compat { inherit src; }).defaultNix;
# Wrap a source path to behave like a `flake = false` input
# (supports both string interpolation and .outPath access)
wrapSource = src: { outPath = src; };
# Build an inputs-like attrset from npins sources.
# Modules continue to use `inputs.foo` / `flake.inputs.foo` unchanged.
npinsInputs = {
# Source-only inputs (formerly flake = false)
nixos-vscode-server = wrapSource sources.nixos-vscode-server;
skills = wrapSource sources.skills;
git-hooks = wrapSource sources.git-hooks;
jumphost-nix = wrapSource sources.jumphost-nix;
# Flake inputs (lazily evaluated via flake-compat)
disko = callFlake sources.disko;
disc-scrape = callFlake sources.disc-scrape;
emanote = callFlake sources.emanote;
github-nix-ci = callFlake sources.github-nix-ci;
imako = callFlake sources.imako;
kolu = callFlake sources.kolu;
landrun-nix = callFlake sources.landrun-nix;
nix-agent-wire = callFlake sources.nix-agent-wire;
nix-index-database = callFlake sources.nix-index-database;
nixos-hardware = callFlake sources.nixos-hardware;
nixvim = callFlake sources.nixvim;
oc = callFlake sources.oc;
vira = callFlake sources.vira;
};
inputs = flakeInputs // npinsInputs;
in
flakeInputs.flake-parts.lib.mkFlake { inherit inputs; } {
systems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" ];
imports = (with builtins;
map