mas: 1.8.6 -> 1.9.0

Notably, this switches back to the .pkg from the tarball, since mas-cli/mas#452
was fixed about three years ago (just after this package was last bumped) and
tarballs are no longer published. Also, the Bash completion file isn’t included
in the pkg (but it’s still in the repo).

Here are the intervening release notes:
- https://github.com/mas-cli/mas/releases/tag/v1.8.7
- https://github.com/mas-cli/mas/releases/tag/v1.8.8
- https://github.com/mas-cli/mas/releases/tag/v1.9.0

And the list of (almost 600) commits since the version currently in Nixpkgs:
mas-cli/mas@v1.8.6...v1.9.0

pkgs/by-name/ma/mas/package.nix

@@ -2,27 +2,44 @@
   lib,
   stdenvNoCC,
   fetchurl,
-  installShellFiles,
+  libarchive,
+  p7zip,
   testers,
   mas,
 }:
 
 stdenvNoCC.mkDerivation rec {
   pname = "mas";
-  version = "1.8.6";
+  version = "1.9.0";
 
   src = fetchurl {
-    # Use the tarball until https://github.com/mas-cli/mas/issues/452 is fixed.
-    # Even though it looks like an OS/arch specific build it is actually a universal binary.
-    url = "https://github.com/mas-cli/mas/releases/download/v${version}/mas-${version}.monterey.bottle.tar.gz";
-    sha256 = "0q4skdhymgn5xrwafyisfshx327faia682yv83mf68r61m2jl10d";
+    url = "https://github.com/mas-cli/mas/releases/download/v${version}/mas-${version}.pkg";
+    hash = "sha256-MiSrCHLby3diTAzDPCYX1ZwdmzcHwOx/UJuWrlRJe54=";
   };
 
-  nativeBuildInputs = [ installShellFiles ];
+  nativeBuildInputs = [
+    libarchive
+    p7zip
+  ];
+
+  unpackPhase = ''
+    runHook preUnpack
+
+    7z x $src
+    bsdtar -xf Payload~
+
+    runHook postUnpack
+  '';
+
+  dontBuild = true;
 
   installPhase = ''
-    install -D './${version}/bin/mas' "$out/bin/mas"
-    installShellCompletion --cmd mas --bash './${version}/etc/bash_completion.d/mas'
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp mas $out/bin
+
+    runHook postInstall
   '';
 
   passthru.tests = {