1 files changed, 12 insertions, 31 deletions

diff --git a/src/panto_home.zig b/src/panto_home.zig
index 5d111d6..bc715f0 100644
--- a/src/panto_home.zig
+++ b/src/panto_home.zig
@@ -1,10 +1,10 @@
-//! Filesystem layout resolution for `$PANTO_HOME` and the per-Lua
+//! Filesystem layout resolution for the panto data home and the per-Lua
 //! version rocks tree.
 //!
-//!     $PANTO_HOME = $XDG_DATA_HOME/panto
-//!                   (or $HOME/.local/share/panto if XDG_DATA_HOME unset)
+//!     data home = $XDG_DATA_HOME/panto
+//!                 (or $HOME/.local/share/panto if XDG_DATA_HOME unset)
 //!
-//!     $PANTO_HOME/
+//!     data home/
 //!       rocks/
 //!         lua-5.4.7/                  ← current tree
 //!           include/                  ← Lua headers staged by bootstrap
@@ -28,18 +28,18 @@ const Io = std.Io;
 /// fields are owned by the same allocator passed to `resolve`.
 pub const Layout = struct {
     allocator: Allocator,
-    /// `$PANTO_HOME` itself.
+    /// The panto data home.
     home: []u8,
-    /// `$PANTO_HOME/agent/` — the "base" extension/tool tree,
+    /// `<data home>/agent/` — the "base" extension/tool tree,
     /// populated at bootstrap from files embedded into the panto
     /// binary. Searched after user/project layers for tools and
     /// extensions; project shadows user shadows base.
     agent_dir: []u8,
-    /// `$PANTO_HOME/auth/` — persisted provider auth tokens, one
+    /// `<data home>/auth/` — persisted provider auth tokens, one
     /// `<auth-name>.json` per OAuth session. Files are written owner-only;
     /// treat them like passwords.
     auth_dir: []u8,
-    /// `$PANTO_HOME/rocks/lua-<lua_version>/` — the versioned tree.
+    /// `<data home>/rocks/lua-<lua_version>/` — the versioned tree.
     tree: []u8,
     /// `<tree>/include/` — where Lua headers are staged.
     include_dir: []u8,
@@ -74,17 +74,15 @@ pub const Layout = struct {
 };
 
 /// Resolve every path the runtime cares about. Environment-driven:
-///   - `PANTO_HOME` (explicit override)
 ///   - `XDG_DATA_HOME` (XDG default)
 ///   - `HOME` (fallback)
 ///
-/// Returns `error.NoHomeDirectory` if none of those are available and
-/// no `PANTO_HOME` was set.
+/// Returns `error.NoHomeDirectory` if neither is available.
 pub fn resolve(
     allocator: Allocator,
     environ_map: *const std.process.Environ.Map,
 ) !Layout {
-    const home = try resolveHome(allocator, environ_map);
+    const home = try homePath(allocator, environ_map);
     errdefer allocator.free(home);
 
     const agent_dir = try std.fs.path.join(allocator, &.{ home, "agent" });
@@ -140,15 +138,12 @@ pub fn resolve(
     };
 }
 
-/// Resolve `$PANTO_HOME` honoring overrides in the documented order.
+/// Resolve the panto data home. Returns owned bytes.
 /// Returns owned bytes.
-fn resolveHome(
+pub fn homePath(
     allocator: Allocator,
     environ_map: *const std.process.Environ.Map,
 ) ![]u8 {
-    if (environ_map.get("PANTO_HOME")) |explicit| {
-        return allocator.dupe(u8, explicit);
-    }
     if (environ_map.get("XDG_DATA_HOME")) |xdg| {
         return std.fs.path.join(allocator, &.{ xdg, "panto" });
     }
@@ -184,20 +179,6 @@ fn makePathRecursive(io: Io, path: []const u8) !void {
 
 const testing = std.testing;
 
-test "resolve: PANTO_HOME explicit override wins" {
-    var env: std.process.Environ.Map = .init(testing.allocator);
-    defer env.deinit();
-    try env.put("PANTO_HOME", "/tmp/some/home");
-    try env.put("XDG_DATA_HOME", "/should/be/ignored");
-
-    var layout = try resolve(testing.allocator, &env);
-    defer layout.deinit();
-
-    try testing.expectEqualStrings("/tmp/some/home", layout.home);
-    try testing.expect(std.mem.indexOf(u8, layout.tree, "/tmp/some/home/rocks/lua-") != null);
-    try testing.expect(std.mem.endsWith(u8, layout.share_lua_dir, "/share/lua/" ++ manifest.lua_short_version));
-}
-
 test "resolve: XDG_DATA_HOME is honored before HOME" {
     var env: std.process.Environ.Map = .init(testing.allocator);
     defer env.deinit();