Add melpa packages

.travis.yml

@@ -7,6 +7,7 @@ env:
   - DEPLOY_BRANCH="master"
   - GIT_NAME="EXWM-Updater"
   - GIT_EMAIL="exwm-updater@example.org"
+  - NIX_PATH=nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-unstable.tar.gz
 before_install:
 - openssl aes-256-cbc -K $encrypted_88023bb2dbf0_key -iv $encrypted_88023bb2dbf0_iv -in .travis/deploy_rsa.enc -out $SSH_KEY -d
 

default.nix

@@ -1,5 +1,6 @@
 self: super:
 let
+
   mkExDrv = emacsPackagesNg: name: args: let
     repoMeta = super.lib.importJSON (./. + "/repos/${name}.json");
   in emacsPackagesNg.melpaBuild (args // {
@@ -36,14 +37,31 @@ in {
     ];
   });
 
-  emacsPackagesNgFor = emacs:
+  emacsPackagesNgFor = emacs: (
-    (super.emacsPackagesNgFor emacs).overrideScope'(eself: esuper: {
+    (super.emacsPackagesNgFor emacs).overrideScope'(eself: esuper: let
+
+      melpaStablePackages = esuper.melpaStablePackages.override {
+        archiveJson = ./repos/recipes-archive-melpa.json;
+      };
+
+      melpaPackages = esuper.melpaPackages.override {
+        archiveJson = ./repos/recipes-archive-melpa.json;
+      };
+
+      # TODO: Org/elpa packages
+
+      epkgs = esuper.override {
+        inherit melpaStablePackages melpaPackages;
+      };
+
+    in epkgs // {
       xelb = mkExDrv eself "xelb" {
         packageRequires = [ eself.cl-generic eself.emacs ];
       };
+
       exwm = mkExDrv eself "exwm" {
         packageRequires = [ eself.xelb ];
       };
-    });
+    }));
 
 }

update

@@ -18,8 +18,16 @@ function update_repo() {
     echo "{\"rev\": \"${commit_sha}\", \"sha256\": \"${digest}\", \"version\": \"${version_number}\"}" > repos/$repo.json
 }
 
+function update_melpa() {
+    cd repos
+    eval $(nix-instantiate --eval --expr 'let nixpath = builtins.toString (import <nixpkgs> {}).path; in "${nixpath}/pkgs/applications/editors/emacs-modes/update-melpa"')
+    cd -
+}
+
 update_repo ch11ng exwm
 update_repo ch11ng xelb
 update_repo emacs-mirror emacs
 
+update_melpa
+
 nix-build --no-out-link --show-trace ./test.nix