tp_smapi: updateScript added

pkgs/os-specific/linux/tp_smapi/default.nix

@@ -1,13 +1,12 @@
-{stdenv, fetchurl, kernel}:
+{ stdenv, fetchurl, kernel, writeScript, coreutils, gnugrep, jq, curl
+}:
 
-stdenv.mkDerivation rec {
-  version = "0.42";
-  name = "tp_smapi-${version}-${kernel.version}";
+let
+  data = stdenv.lib.importJSON ./update.json;
+in stdenv.mkDerivation rec {
+  name = "tp_smapi-${data.version}-${kernel.version}";
 
-  src = fetchurl {
-    url = "https://github.com/evgeni/tp_smapi/releases/download/tp-smapi%2F0.42/tp_smapi-${version}.tgz";
-    sha256 = "09rdg7fm423x6sbbw3lvnvmk4nyc33az8ar93xgq0n9qii49z3bv";
-  };
+  src = fetchurl  { inherit (data) url sha256; };
 
   hardeningDisable = [ "pic" ];
 
@@ -25,6 +24,10 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  passthru.updateScript = import ./update.nix {
+    inherit writeScript coreutils gnugrep jq curl;
+  };
+
   meta = {
     description = "IBM ThinkPad hardware functions driver";
     homepage = "https://github.com/evgeni/tp_smapi/tree/tp-smapi/0.41";

pkgs/os-specific/linux/tp_smapi/update.json

@@ -0,0 +1,5 @@
+{
+  "version": "0.42",
+  "url": "https://github.com/evgeni/tp_smapi/archive/tp-smapi/0.42.tar.gz",
+  "sha256": "cd28bf6ee21b2c27b88d947cb0bfcb19648c7daa5d350115403dbcad05849381"
+}

pkgs/os-specific/linux/tp_smapi/update.nix

@@ -0,0 +1,23 @@
+{ writeScript, coreutils, gnugrep, jq, curl
+}:
+
+writeScript "update-tp_smapi" ''
+PATH=${coreutils}/bin:${gnugrep}/bin:${jq}/bin:${curl}/bin
+
+pushd pkgs/os-specific/linux/tp_smapi
+
+tmpfile=`mktemp`
+tags=`curl -s https://api.github.com/repos/evgeni/tp_smapi/tags`
+latest_tag=`echo $tags | jq -r '.[] | .name' | grep -oP "^tp-smapi/\K.*" | sort --version-sort | tail -1`
+sha256=`curl -sL "https://github.com/evgeni/tp_smapi/archive/tp-smapi/$latest_tag.tar.gz" | sha256sum | cut -d" " -f1`
+
+cat > update.json <<EOF
+{
+  "version": "$latest_tag",
+  "url": "https://github.com/evgeni/tp_smapi/archive/tp-smapi/$latest_tag.tar.gz",
+  "sha256": "$sha256"
+}
+EOF
+
+popd
+''

update.nix

@@ -48,12 +48,15 @@ let
                    pkgs;
 
   packageByName = name:
-      if ! builtins.hasAttr name pkgs then
+    let
+        package = pkgs.lib.attrByPath (pkgs.lib.splitString "." name) null pkgs;
+    in
+      if package == null then
         builtins.throw "Package with an attribute name `${name}` does not exists."
-      else if ! builtins.hasAttr "updateScript" (builtins.getAttr name pkgs) then
+      else if ! builtins.hasAttr "updateScript" package then
         builtins.throw "Package with an attribute name `${name}` does have an `passthru.updateScript` defined."
       else
-        builtins.getAttr name pkgs;
+        package;
 
   packages =
     if package != null then