steamcmd: support x86_64-darwin

pkgs/by-name/st/steamcmd/package.nix

@@ -3,19 +3,33 @@
   stdenv,
   fetchurl,
   steam-run,
-  bash,
   coreutils,
-  steamRoot ? "~/.local/share/Steam",
+  steamRoot ? "$HOME/.local/share/Steam",
 }:
-
+let
+  srcs =
+    let
+      url =
+        platform:
+        "https://web.archive.org/web/20240521141411/https://steamcdn-a.akamaihd.net/client/installer/steamcmd_${platform}.tar.gz";
+    in
+    {
+      x86_64-darwin = fetchurl {
+        url = url "osx";
+        hash = "sha256-jswXyJiOWsrcx45jHEhJD3YVDy36ps+Ne0tnsJe9dTs=";
+      };
+      x86_64-linux = fetchurl {
+        url = url "linux";
+        hash = "sha256-zr8ARr/QjPRdprwJSuR6o56/QVXl7eQTc7V5uPEHHnw=";
+      };
+    };
+in
 stdenv.mkDerivation {
   pname = "steamcmd";
   version = "20180104"; # According to steamcmd_linux.tar.gz mtime
 
-  src = fetchurl {
-    url = "https://web.archive.org/web/20240521141411/https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz";
-    hash = "sha256-zr8ARr/QjPRdprwJSuR6o56/QVXl7eQTc7V5uPEHHnw=";
-  };
+  src =
+    srcs.${stdenv.hostPlatform.system} or (throw "Unsupported system: ${stdenv.hostPlatform.system}");
 
   # The source tarball does not have a single top-level directory.
   preUnpack = ''
@@ -24,24 +38,18 @@ stdenv.mkDerivation {
     sourceRoot=.
   '';
 
-  buildInputs = [
-    bash
-    steam-run
-  ];
-
   dontBuild = true;
 
   installPhase = ''
-    mkdir -p $out/share/steamcmd/linux32
-    install -Dm755 steamcmd.sh $out/share/steamcmd/steamcmd.sh
-    install -Dm755 linux32/* $out/share/steamcmd/linux32
+    mkdir -p $out/share/steamcmd
+    find . -type f -exec install -Dm 755 "{}" "$out/share/steamcmd/{}" \;
 
     mkdir -p $out/bin
     substitute ${./steamcmd.sh} $out/bin/steamcmd \
       --subst-var out \
       --subst-var-by coreutils ${coreutils} \
-      --subst-var-by steamRoot "${steamRoot}" \
-      --subst-var-by steamRun ${steam-run}
+      --subst-var-by steamRoot '${steamRoot}' \
+      --subst-var-by steamRun ${if stdenv.hostPlatform.isLinux then (lib.getExe steam-run) else "exec"}
     chmod 0755 $out/bin/steamcmd
   '';
 
@@ -49,7 +57,10 @@ stdenv.mkDerivation {
     homepage = "https://developer.valvesoftware.com/wiki/SteamCMD";
     description = "Steam command-line tools";
     mainProgram = "steamcmd";
-    platforms = lib.platforms.linux;
+    platforms = [
+      "x86_64-linux"
+      "x86_64-darwin"
+    ];
     license = lib.licenses.unfreeRedistributable;
     maintainers = with lib.maintainers; [ tadfisher ];
   };

pkgs/by-name/st/steamcmd/steamcmd.sh

@@ -20,8 +20,8 @@ fi
 if [ ! -e "$STEAMROOT/steamcmd.sh" ]; then
   mkdir -p "$STEAMROOT/linux32"
   # steamcmd.sh will replace these on first use
-  cp @out@/share/steamcmd/steamcmd.sh "$STEAMROOT/."
-  cp @out@/share/steamcmd/linux32/* "$STEAMROOT/linux32/."
+  cd @out@/share/steamcmd
+  find . -type f -exec install -Dm 755 "{}" "$STEAMROOT/{}" \;
 fi
 
-@steamRun@/bin/steam-run "$STEAMROOT/steamcmd.sh" "$@"
+@steamRun@ "$STEAMROOT/steamcmd.sh" "$@"