chore(nix): Move files around to conform to new read-tree layout

Broadly speaking, the following things are included:

* there is now a uniform `args` struct that is passed to all
  derivations, package headers have been changed appropriately
* overrides are now loaded from a separate `override` folder just
  using read-tree.nix
* third-party packages have moved into the `third_party` attribute set

1 files changed, 20 insertions, 64 deletions

diff --git a/default.nix b/default.nix
index 93e2d9fc5457..789098667a11 100644
--- a/default.nix
+++ b/default.nix
@@ -14,78 +14,34 @@ let
     url = "https://github.com/NixOS/nixpkgs-channels/archive/${stableCommit}.tar.gz";
     sha256 = "0243qiivxl3z51biy4f5y5cy81x5bki5dazl9wqwgnmd373gpmxy";
   };
+  readTree = import ./read-tree.nix;
 
-  localPkgs = self: super: {
-    # Local projects should be added here:
-    tazjin = {
-      blog = self.callPackage ./services/tazblog {};
-      blog_cli = self.callPackage ./tools/blog_cli {};
-      gemma = self.callPackage ./services/gemma {};
-      nixcon = self.naersk.buildPackage ./services/nixcon-demo {};
+  localPkgs = self: super:
+    let config = {
+      pkgs = self;
+      upstream = super;
 
-      kms_pass = self.callPackage ./tools/kms_pass {
+      kms = {
         project = "tazjins-infrastructure";
         region = "europe-north1";
         keyring = "tazjins-keys";
         key = "kontemplate-key";
       };
     };
-
-    # Third-party projects (either vendored or modified from nixpkgs) go here:
-    nixery = import ./third_party/nixery.nix { pkgs = self; };
-    terraform-gcp = self.terraform_0_12.withPlugins(p: [ p.google p.google-beta ]);
-    ormolu = import (self.fetchFromGitHub {
-      owner = "tweag";
-      repo = "ormolu";
-      rev = "a7076c0f83e5c06ea9067b71171859fa2ba8afd9";
-      sha256 = "1p4n2ja4ciw3qfskn65ggpy37mvgf2sslxqmqn8s8jjarnqcyfny";
-    }) { pkgs = self; };
-    naersk = self.callPackage (self.fetchFromGitHub {
-      owner = "nmattia";
-      repo = "naersk";
-      rev = "68c1c2b2b661913cdc5ecabea518dfdc4f449027";
-      sha256 = "1ll310pl44kdbwfslzwvg2v7khf1y0xkg2j5wcfia4k7sj6bcl28";
-    }) {};
-
-    # Gemma needs an older version of Elm to be built. Updating it to
-    # the newer version is a lot of effort.
-    elmPackages = (import (self.fetchFromGitHub {
-      owner = "NixOS";
-      repo = "nixpkgs";
-      rev = "14f9ee66e63077539252f8b4550049381a082518";
-      sha256 = "1wn7nmb1cqfk2j91l3rwc6yhimfkzxprb8wknw5wi57yhq9m6lv1";
-    }) {}).elmPackages;
-
-    # Wrap kontemplate to inject the Cloud KMS version of 'pass'
-    kontemplate =
-      let master = super.kontemplate.overrideAttrs(_: {
-        src = self.fetchFromGitHub {
-          owner = "tazjin";
-          repo = "kontemplate";
-          rev = "v1.8.0";
-          sha256 = "123mjmmm4hynraq1fpn3j5i0a1i87l265kkjraxxxbl0zacv74i1";
-        };
-      });
-      in self.writeShellScriptBin "kontemplate" ''
-        export PATH="${self.tazjin.kms_pass}/bin:$PATH"
-        exec ${master}/bin/kontemplate $@
-      '';
-
-    # One of Gemma's dependencies is missing in nixpkgs' Quicklisp
-    # package set, it is overlaid locally here.
-    lispPackages = import ./third_party/common_lisp/quicklisp.nix {
-      inherit (self) lib;
-      inherit (super) lispPackages;
-    };
-
-    # All projects that should be built by CI should be added here:
-    ciProjects = [
-      self.kontemplate
-      self.nixery
-      self.ormolu
-      self.terraform-gcp
-    ] ++ filter (d: d ? meta.broken && !d.meta.broken) (attrValues self.tazjin);
-  };
+    in {
+      services = readTree ./services config;
+      tools = readTree ./tools config;
+      third_party = readTree ./third_party config;
+    } // (readTree ./overrides config);
+
+  #   # All projects that should be built by CI should be added here:
+  #   ciProjects = [
+  #     self.kontemplate
+  #     self.nixery
+  #     self.ormolu
+  #     self.terraform-gcp
+  #   ] ++ filter (d: d ? meta.broken && !d.meta.broken) (attrValues self.tazjin);
+  # };
 
 in { ... } @ args: import stableSrc (args // {
     overlays = [ localPkgs ];