pinwheel: Use pkgs.buildFHSUserEnv for pants

hosts/pinwheel/modules/work/default.nix

@@ -13,11 +13,7 @@ in
 
     home.packages = [
       (pkgs.callPackage ./syb-cli.nix {})
-
-      (pkgs.callPackage ./pants.nix {
-        nix-alien = inputs.nix-alien.packages."${pkgs.system}".nix-alien;
-      })
-      pkgs.unzip # needed by pants
+      (pkgs.callPackage ./pants.nix {})
 
       (pkgs.jetbrains.plugins.addPlugins pkgs.jetbrains.idea-ultimate [ "ideavim" ])
       (pkgs.google-cloud-sdk.withExtraComponents [ pkgs.google-cloud-sdk.components.gke-gcloud-auth-plugin ])

hosts/pinwheel/modules/work/pants.nix

@@ -1,39 +1,47 @@
 {
-  stdenv,
   fetchurl,
-  writeShellScriptBin,
-  nix-alien,
-  ...
+  pkgs,
+  lib,
 }:
 let
-  version = "0.11.0";
+  pname = "pants";
+  version = "0.12.0";
 
-  unpatched = stdenv.mkDerivation {
-    name = "scie-pants";
-    version = version;
-    sourceRoot = ".";
-    phases = [
-      "installPhase"
-      "patchPhase"
-    ];
+  scie-pants = pkgs.stdenv.mkDerivation {
+    inherit pname version;
 
     src = fetchurl {
-      url = "https://github.com/pantsbuild/scie-pants/releases/download/v${version}/scie-pants-linux-x86_64";
-      sha256 = "sha256-ifP5gjTdLMXyVSKda6pPBNNcnJZ0giuqikFBk7cXgHI=";
+      url = "https://github.com/pantsbuild/scie-pants/releases/download/v${version}/scie-${pname}-linux-x86_64";
+      hash = "sha256-9PjgobndxVqDTYGtw1HESrtzwzH2qE9zFwR26xtwZrM=";
     };
 
+    phases = ["installPhase" "patchPhase"];
     installPhase = ''
-      runHook preInstall
-
       mkdir -p $out/bin
       cp $src $out/bin/pants
       chmod +x $out/bin/pants
-
-      runHook postInstall
     '';
   };
 in
-writeShellScriptBin "pants" ''
-  export LD_LIBRARY_PATH=$NIX_LD_LIBRARY_PATH
-  ${nix-alien}/bin/nix-alien ${unpatched}/bin/pants -- "$@"
-''
+pkgs.buildFHSUserEnv  {
+  name = "pants";
+
+  targetPackages = with pkgs; [
+    python39
+  ];
+
+  runScript = "${scie-pants}/bin/pants";
+  profile = ''
+    export NIX_SSL_CERT_FILE="/etc/ssl/certs/ca-certificates.crt"
+    export SSL_CERT_FILE="/etc/ssl/certs/ca-bundle.crt"
+  '';
+
+  meta = with lib; {
+    description = "Protects your Pants from the elements";
+    homepage = "https://github.com/pantsbuild/scie-pants";
+    license = licenses.asl20;
+    maintainers = [];
+    platforms = [ "x86_64-linux" ];
+    mainProgram = "pants";
+  };
+}