Init infrastructure

Benjamin, I hate you.

Signed-off-by: Ryan Lahfa <federez-infra@lahfa.xyz>

npins/default.nix

@@ -0,0 +1,47 @@
+# Generated by npins. Do not modify; will be overwritten regularly
+let
+  data = builtins.fromJSON (builtins.readFile ./sources.json);
+  version = data.version;
+
+  mkSource = spec:
+    assert spec ? type; let
+      path =
+        if spec.type == "Git" then mkGitSource spec
+        else if spec.type == "GitRelease" then mkGitSource spec
+        else if spec.type == "PyPi" then mkPyPiSource spec
+        else if spec.type == "Channel" then mkChannelSource spec
+        else builtins.throw "Unknown source type ${spec.type}";
+    in
+    spec // { outPath = path; };
+
+  mkGitSource = { repository, revision, url ? null, hash, ... }:
+    assert repository ? type;
+    # At the moment, either it is a plain git repository (which has an url), or it is a GitHub/GitLab repository
+    # In the latter case, there we will always be an url to the tarball
+    if url != null then
+      (builtins.fetchTarball {
+        inherit url;
+        sha256 = hash; # FIXME: check nix version & use SRI hashes
+      })
+    else assert repository.type == "Git"; builtins.fetchGit {
+      url = repository.url;
+      rev = revision;
+      # hash = hash;
+    };
+
+  mkPyPiSource = { url, hash, ... }:
+    builtins.fetchurl {
+      inherit url;
+      sha256 = hash;
+    };
+
+  mkChannelSource = { url, hash, ... }:
+    builtins.fetchTarball {
+      inherit url;
+      sha256 = hash;
+    };
+in
+if version == 3 then
+  builtins.mapAttrs (_: mkSource) data.pins
+else
+  throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"

npins/sources.json

@@ -0,0 +1,35 @@
+{
+  "pins": {
+    "agenix": {
+      "type": "Git",
+      "repository": {
+        "type": "GitHub",
+        "owner": "ryantm",
+        "repo": "agenix"
+      },
+      "branch": "main",
+      "revision": "417caa847f9383e111d1397039c9d4337d024bf0",
+      "url": "https://github.com/ryantm/agenix/archive/417caa847f9383e111d1397039c9d4337d024bf0.tar.gz",
+      "hash": "0g240g51w62r7j67dcc73xkdnhd26nk07043qsqqavl5mbh40swy"
+    },
+    "disko": {
+      "type": "Git",
+      "repository": {
+        "type": "GitHub",
+        "owner": "nix-community",
+        "repo": "disko"
+      },
+      "branch": "master",
+      "revision": "d07de570ba05cec2807d058daaa044f6955720c7",
+      "url": "https://github.com/nix-community/disko/archive/d07de570ba05cec2807d058daaa044f6955720c7.tar.gz",
+      "hash": "18rli5h2xmzbbwambrcrg7r22vp0rmnjm55mcqc00n3fq5kscsqy"
+    },
+    "nixpkgs": {
+      "type": "Channel",
+      "name": "nixos-unstable-small",
+      "url": "https://releases.nixos.org/nixos/unstable-small/nixos-24.05pre583100.bdc57436da85/nixexprs.tar.xz",
+      "hash": "1ds8jv7wn5dx5s725jkzk6dk3j54kbhjl7aabc4y45v1m7bp9s3r"
+    }
+  },
+  "version": 3
+}