use stdlib selfExePath

src/os/exe.zig

@@ -1,42 +0,0 @@
-const std = @import("std");
-const builtin = @import("builtin");
-
-/// Returns the path to the currently executing executable. This may return
-/// null if the path cannot be determined. This function is not thread-safe.
-///
-/// This function can be very slow. The caller can choose to cache the value
-/// if they want but this function itself doesn't handle caching.
-///
-/// From: https://unix.stackexchange.com/questions/317211/absolute-path-to-currently-executing-program
-pub fn exePath(buf: []u8) !?[]const u8 {
-    if (comptime builtin.target.isDarwin()) {
-        // We put the path into a temporary buffer first because we need
-        // to call realpath on it to resolve symlinks and expand all ".."
-        // and such.
-        var size: u32 = std.math.cast(u32, buf.len) orelse return error.OutOfMemory;
-        const result = _NSGetExecutablePath(buf.ptr, &size);
-        if (result == -1) return error.OutOfMemory;
-        if (result != 0) return error.Unknown;
-        const path = std.mem.sliceTo(buf, 0);
-
-        // Expand.
-        var realpath_buf: [std.fs.MAX_PATH_BYTES]u8 = undefined;
-        const realpath = try std.os.realpath(path, &realpath_buf);
-        if (realpath.len > buf.len) return error.OutOfMemory;
-
-        @memcpy(buf[0..realpath.len], realpath);
-        return buf[0..realpath.len];
-    }
-
-    return null;
-}
-
-// https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man3/dyld.3.html
-extern "c" fn _NSGetExecutablePath(buf: [*]u8, size: *u32) c_int;
-
-test exePath {
-    // This just ensures it compiles and runs without crashing. The result
-    // is allowed to be null for non-supported platforms.
-    var buf: [4096]u8 = undefined;
-    _ = try exePath(&buf);
-}

src/os/main.zig

@@ -1,7 +1,6 @@
 //! The "os" package contains utilities for interfacing with the operating
 //! system.
 
-pub usingnamespace @import("exe.zig");
 pub usingnamespace @import("file.zig");
 pub usingnamespace @import("flatpak.zig");
 pub usingnamespace @import("locale.zig");

src/termio/Exec.zig

@@ -775,7 +775,7 @@ const Subprocess = struct {
 
         // Get the path to our running binary
         var exe_buf: [std.fs.MAX_PATH_BYTES]u8 = undefined;
-        var exe = (try internal_os.exePath(&exe_buf)) orelse return null;
+        var exe: []const u8 = std.fs.selfExePath(&exe_buf) catch return null;
 
         // We have an exe path! Climb the tree looking for the terminfo
         // bundle as we expect it.