Initial commit

default.nix

@@ -0,0 +1,47 @@
+self: super:
+let
+  mkSrc = repoName: super.fetchFromGitHub (let
+    hashes = super.lib.importJSON (./. + "/repos/${repoName}.json");
+  in {
+    owner  = "ch11ng";
+    repo   = repoName;
+    rev    = hashes.rev;
+    sha256 = hashes.sha256;
+  });
+
+
+in {
+  # emacsPackagesNgFor = emacs: (super.emacsPackagesFor emacs // overridenAttrs);
+  emacsPackagesNgFor = emacs: let
+    emacsPackagesNg = super.emacsPackagesNgFor emacs;
+    overridenAttrs = (with emacsPackagesNg; let
+      xelb = melpaBuild {
+        pname   = "xelb";
+        ename   = "xelb";
+        version = "0.15";
+        recipe  = builtins.toFile "recipe" ''
+          (xelb :fetcher github
+                :repo "ch11ng/xelb")
+        '';
+
+        packageRequires = [ cl-generic super.emacs ];
+
+        src = mkSrc "xelb";
+      };
+    in {
+      exwm = melpaBuild {
+        pname   = "exwm";
+        ename   = "exwm";
+        version = "0.19";
+        recipe  = builtins.toFile "recipe" ''
+          (exwm :fetcher github
+                :repo "ch11ng/exwm")
+        '';
+
+        packageRequires = [ xelb ];
+
+        src = mkSrc "exwm";
+     };
+    });
+  in emacsPackagesNg // overridenAttrs;
+}

repos/exwm.json

@@ -0,0 +1 @@
+{"rev": "2efd7495d9755e12a611dbf27dac6057287cd590", "sha256": "033j40mvmzz1cqhgkfr4hzlq46r8ps5vkbsc2nfrjz9p03rbcrnc"}

repos/xelb.json

@@ -0,0 +1 @@
+{"rev": "3226fe29666df74e1cc365e28eb94f31983dd622", "sha256": "1h6mwswswn84in5cd9srivqc32yz8kx34c3h7cdq6z4rpw76177h"}

update

@@ -0,0 +1,15 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p curl jq nix
+set -euxo pipefail
+
+function update_repo() {
+    repo=$1
+    echo $repo
+
+    commit_sha=$(curl "https://api.github.com/repos/ch11ng/$repo/commits?sha=master" | jq -r 'first.sha')
+    digest=$(nix-prefetch-url --unpack "https://github.com/ch11ng/$repo/archive/${commit_sha}.tar.gz")
+    echo "{\"rev\": \"${commit_sha}\", \"sha256\": \"${digest}\"}" > repos/$repo.json
+}
+
+update_repo exwm
+update_repo xelb