commit ac09326189b3ee2a3000d7106c2323e3e76d9250
parent 329f3adc7a5509fafa029e32f7fac5aa45a4dec8
Author: Vincent Demeester <vincent@sbr.pm>
Date: Wed, 20 May 2020 13:29:06 +0200
nix: add nix/ tracked using niv 📛
The idea here is to use `nix/sources.nix` to track derivation, …
instead of channels. That way, an update is *just* `niv update` and
re-building… Most of this could even be run in a ci and tested.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Diffstat:
| A | nix/sources.json | | | 62 | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | nix/sources.nix | | | 134 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
2 files changed, 196 insertions(+), 0 deletions(-)
diff --git a/nix/sources.json b/nix/sources.json
@@ -0,0 +1,62 @@
+{
+ "home-manager": {
+ "branch": "master",
+ "description": "Manage a user environment using Nix",
+ "homepage": "https://rycee.gitlab.io/home-manager/",
+ "owner": "rycee",
+ "repo": "home-manager",
+ "rev": "cc48e15f28bea29c47e1e1b573bb36baa159c324",
+ "sha256": "04njsk751qfhmq44a987p3p8rqpq96ycqf0n8wiis0riz9mq57kr",
+ "type": "tarball",
+ "url": "https://github.com/rycee/home-manager/archive/cc48e15f28bea29c47e1e1b573bb36baa159c324.tar.gz",
+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+ },
+ "niv": {
+ "branch": "master",
+ "description": "Easy dependency management for Nix projects",
+ "homepage": "https://github.com/nmattia/niv",
+ "owner": "nmattia",
+ "repo": "niv",
+ "rev": "f73bf8d584148677b01859677a63191c31911eae",
+ "sha256": "0jlmrx633jvqrqlyhlzpvdrnim128gc81q5psz2lpp2af8p8q9qs",
+ "type": "tarball",
+ "url": "https://github.com/nmattia/niv/archive/f73bf8d584148677b01859677a63191c31911eae.tar.gz",
+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+ },
+ "nixos": {
+ "branch": "nixos-20.03",
+ "description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to",
+ "homepage": "https://github.com/NixOS/nixpkgs",
+ "owner": "NixOS",
+ "repo": "nixpkgs-channels",
+ "rev": "82b5f87fcc710a99c47c5ffe441589807a8202af",
+ "sha256": "0wz07gzapdj95h9gf0rdc2ywgd7fnaivnf4vhwyh5gx24dblg7q8",
+ "type": "tarball",
+ "url": "https://github.com/NixOS/nixpkgs-channels/archive/82b5f87fcc710a99c47c5ffe441589807a8202af.tar.gz",
+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+ },
+ "nixos-unstable": {
+ "branch": "nixos-unstable",
+ "description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to",
+ "homepage": "https://github.com/NixOS/nixpkgs",
+ "owner": "NixOS",
+ "repo": "nixpkgs-channels",
+ "rev": "0f5ce2fac0c726036ca69a5524c59a49e2973dd4",
+ "sha256": "0nkk492aa7pr0d30vv1aw192wc16wpa1j02925pldc09s9m9i0r3",
+ "type": "tarball",
+ "url": "https://github.com/NixOS/nixpkgs-channels/archive/0f5ce2fac0c726036ca69a5524c59a49e2973dd4.tar.gz",
+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+ },
+ "nixpkgs": {
+ "branch": "nixpkgs-unstable",
+ "description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to",
+ "homepage": "https://github.com/NixOS/nixpkgs",
+ "owner": "NixOS",
+ "repo": "nixpkgs-channels",
+ "rev": "17812e653d89c46d68b7b10e290b1c16758f4e47",
+ "sha256": "1zcb70dyfqc8l2ywpbvxmpfshapdi0g365m3rhmwpagqg47pnyxs",
+ "type": "tarball",
+ "url": "https://github.com/NixOS/nixpkgs-channels/archive/17812e653d89c46d68b7b10e290b1c16758f4e47.tar.gz",
+ "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+ }
+}
diff --git a/nix/sources.nix b/nix/sources.nix
@@ -0,0 +1,134 @@
+# This file has been generated by Niv.
+
+let
+
+ #
+ # The fetchers. fetch_<type> fetches specs of type <type>.
+ #
+
+ fetch_file = pkgs: spec:
+ if spec.builtin or true then
+ builtins_fetchurl { inherit (spec) url sha256; }
+ else
+ pkgs.fetchurl { inherit (spec) url sha256; };
+
+ fetch_tarball = pkgs: spec:
+ if spec.builtin or true then
+ builtins_fetchTarball { inherit (spec) url sha256; }
+ else
+ pkgs.fetchzip { inherit (spec) url sha256; };
+
+ fetch_git = spec:
+ builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; };
+
+ fetch_builtin-tarball = spec:
+ builtins.trace
+ ''
+ WARNING:
+ The niv type "builtin-tarball" will soon be deprecated. You should
+ instead use `builtin = true`.
+
+ $ niv modify <package> -a type=tarball -a builtin=true
+ ''
+ builtins_fetchTarball { inherit (spec) url sha256; };
+
+ fetch_builtin-url = spec:
+ builtins.trace
+ ''
+ WARNING:
+ The niv type "builtin-url" will soon be deprecated. You should
+ instead use `builtin = true`.
+
+ $ niv modify <package> -a type=file -a builtin=true
+ ''
+ (builtins_fetchurl { inherit (spec) url sha256; });
+
+ #
+ # Various helpers
+ #
+
+ # The set of packages used when specs are fetched using non-builtins.
+ mkPkgs = sources:
+ let
+ sourcesNixpkgs =
+ import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {};
+ hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
+ hasThisAsNixpkgsPath = <nixpkgs> == ./.;
+ in
+ if builtins.hasAttr "nixpkgs" sources
+ then sourcesNixpkgs
+ else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
+ import <nixpkgs> {}
+ else
+ abort
+ ''
+ Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
+ add a package called "nixpkgs" to your sources.json.
+ '';
+
+ # The actual fetching function.
+ fetch = pkgs: name: spec:
+
+ if ! builtins.hasAttr "type" spec then
+ abort "ERROR: niv spec ${name} does not have a 'type' attribute"
+ else if spec.type == "file" then fetch_file pkgs spec
+ else if spec.type == "tarball" then fetch_tarball pkgs spec
+ else if spec.type == "git" then fetch_git spec
+ else if spec.type == "builtin-tarball" then fetch_builtin-tarball spec
+ else if spec.type == "builtin-url" then fetch_builtin-url spec
+ else
+ abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
+
+ # Ports of functions for older nix versions
+
+ # a Nix version of mapAttrs if the built-in doesn't exist
+ mapAttrs = builtins.mapAttrs or (
+ f: set: with builtins;
+ listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
+ );
+
+ # fetchTarball version that is compatible between all the versions of Nix
+ builtins_fetchTarball = { url, sha256 }@attrs:
+ let
+ inherit (builtins) lessThan nixVersion fetchTarball;
+ in
+ if lessThan nixVersion "1.12" then
+ fetchTarball { inherit url; }
+ else
+ fetchTarball attrs;
+
+ # fetchurl version that is compatible between all the versions of Nix
+ builtins_fetchurl = { url, sha256 }@attrs:
+ let
+ inherit (builtins) lessThan nixVersion fetchurl;
+ in
+ if lessThan nixVersion "1.12" then
+ fetchurl { inherit url; }
+ else
+ fetchurl attrs;
+
+ # Create the final "sources" from the config
+ mkSources = config:
+ mapAttrs (
+ name: spec:
+ if builtins.hasAttr "outPath" spec
+ then abort
+ "The values in sources.json should not have an 'outPath' attribute"
+ else
+ spec // { outPath = fetch config.pkgs name spec; }
+ ) config.sources;
+
+ # The "config" used by the fetchers
+ mkConfig =
+ { sourcesFile ? ./sources.json
+ , sources ? builtins.fromJSON (builtins.readFile sourcesFile)
+ , pkgs ? mkPkgs sources
+ }: rec {
+ # The sources, i.e. the attribute set of spec name to spec
+ inherit sources;
+
+ # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
+ inherit pkgs;
+ };
+in
+mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }
