diff -ruwN source/runtime/CMakeLists.txt source-new/runtime/CMakeLists.txt
--- source/runtime/CMakeLists.txt	2025-07-13 01:34:12.000000000 +0700
+++ source-new/runtime/CMakeLists.txt	2025-09-16 14:46:20.134790482 +0700
@@ -24,37 +24,6 @@
 
 file(GLOB PACKAGES CONFIGURE_DEPENDS ${PROJECT_SOURCE_DIR}/runtime/pack/dist/opt/*)
 
-set(GENERATED_PACKAGE_TAGS)
-foreach(PACKAGE ${PACKAGES})
-  get_filename_component(PACKNAME ${PACKAGE} NAME)
-  file(GLOB "${PACKNAME}_DOC_FILES" CONFIGURE_DEPENDS ${PACKAGE}/doc/*.txt)
-  if(${PACKNAME}_DOC_FILES)
-    file(MAKE_DIRECTORY ${GENERATED_PACKAGE_DIR}/${PACKNAME})
-    add_custom_command(OUTPUT "${GENERATED_PACKAGE_DIR}/${PACKNAME}/doc/tags"
-      COMMAND ${CMAKE_COMMAND} -E copy_directory
-        ${PACKAGE} ${GENERATED_PACKAGE_DIR}/${PACKNAME}
-      COMMAND $<TARGET_FILE:nvim_bin>
-        -u NONE -i NONE -e --headless -c "helptags doc" -c quit
-      DEPENDS
-        nvim_bin
-        nvim_runtime_deps
-      WORKING_DIRECTORY "${GENERATED_PACKAGE_DIR}/${PACKNAME}"
-    )
-
-    set("${PACKNAME}_DOC_NAMES")
-    foreach(DF "${${PACKNAME}_DOC_FILES}")
-      get_filename_component(F ${DF} NAME)
-      list(APPEND "${PACKNAME}_DOC_NAMES" ${GENERATED_PACKAGE_DIR}/${PACKNAME}/doc/${F})
-    endforeach()
-
-    install_helper(
-      FILES ${GENERATED_PACKAGE_DIR}/${PACKNAME}/doc/tags "${${PACKNAME}_DOC_NAMES}"
-      DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/nvim/runtime/pack/dist/opt/${PACKNAME}/doc)
-
-    list(APPEND GENERATED_PACKAGE_TAGS "${GENERATED_PACKAGE_DIR}/${PACKNAME}/doc/tags")
-  endif()
-endforeach()
-
 set(BUILDDOCFILES)
 foreach(DF ${DOCFILES})
   get_filename_component(F ${DF} NAME)
@@ -65,8 +34,6 @@
   COMMAND ${CMAKE_COMMAND} -E remove_directory doc
   COMMAND ${CMAKE_COMMAND} -E copy_directory
     ${PROJECT_SOURCE_DIR}/runtime/doc doc
-  COMMAND $<TARGET_FILE:nvim_bin>
-    -u NONE -i NONE -e --headless -c "helptags ++t doc" -c quit
   DEPENDS
     nvim_bin
     nvim_runtime_deps
@@ -78,7 +45,6 @@
   DEPENDS
     ${GENERATED_SYN_VIM}
     ${GENERATED_HELP_TAGS}
-    ${GENERATED_PACKAGE_TAGS}
 )
 
 # CMake is painful here.  It will create the destination using the user's
@@ -88,10 +54,6 @@
 # If it's preexisting, leave it alone.
 
 install_helper(
-  FILES ${GENERATED_HELP_TAGS} ${BUILDDOCFILES}
-  DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/nvim/runtime/doc)
-
-install_helper(
   FILES ${GENERATED_SYN_VIM}
   DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/nvim/runtime/syntax/vim)
 
diff -ruwN source/src/nvim/channel.c source-new/src/nvim/channel.c
--- source/src/nvim/channel.c	2025-07-13 01:34:12.000000000 +0700
+++ source-new/src/nvim/channel.c	2025-09-16 13:41:27.109978099 +0700
@@ -547,8 +547,23 @@
     // Redirect stdout/stdin (the UI channel) to stderr. Use fnctl(F_DUPFD_CLOEXEC) instead of dup()
     // to prevent child processes from inheriting the file descriptors, which are used by UIs to
     // detect when Nvim exits.
+    #ifdef __redox__
+    int new_stdin_fd = dup(STDIN_FILENO);
+    if (new_stdin_fd >= 0) {
+      fcntl(new_stdin_fd, F_SETFD, FD_CLOEXEC);
+    }
+    stdin_dup_fd = new_stdin_fd;
+
+    // 2. Duplicate STDOUT and set CLOEXEC flag
+    int new_stdout_fd = dup(STDOUT_FILENO);
+    if (new_stdout_fd >= 0) {
+      fcntl(new_stdout_fd, F_SETFD, FD_CLOEXEC);
+    }
+    stdout_dup_fd = new_stdout_fd;
+    #else
     stdin_dup_fd = fcntl(STDIN_FILENO, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
     stdout_dup_fd = fcntl(STDOUT_FILENO, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
+    #endif // __redox__
     dup2(STDERR_FILENO, STDOUT_FILENO);
     dup2(STDERR_FILENO, STDIN_FILENO);
   }
diff -ruwN source/src/nvim/CMakeLists.txt source-new/src/nvim/CMakeLists.txt
--- source/src/nvim/CMakeLists.txt	2025-07-13 01:34:12.000000000 +0700
+++ source-new/src/nvim/CMakeLists.txt	2025-09-16 16:07:40.327319085 +0700
@@ -93,19 +93,6 @@
 endif()
 
 # -fstack-protector breaks Mingw-w64 builds
-if(NOT MINGW)
-  check_c_compiler_flag(-fstack-protector-strong HAS_FSTACK_PROTECTOR_STRONG_FLAG)
-  if(HAS_FSTACK_PROTECTOR_STRONG_FLAG)
-    target_compile_options(main_lib INTERFACE -fstack-protector-strong)
-    target_link_libraries(main_lib INTERFACE -fstack-protector-strong)
-  else()
-    check_c_compiler_flag(-fstack-protector HAS_FSTACK_PROTECTOR_FLAG)
-    if(HAS_FSTACK_PROTECTOR_FLAG)
-      target_compile_options(main_lib INTERFACE -fstack-protector --param ssp-buffer-size=4)
-      target_link_libraries(main_lib INTERFACE -fstack-protector --param ssp-buffer-size=4)
-    endif()
-  endif()
-endif()
 
 # Compiler specific options
 if(MSVC)
@@ -145,9 +132,6 @@
 # Platform specific options
 if(UNIX)
   target_link_libraries(main_lib INTERFACE m)
-  if (NOT CMAKE_SYSTEM_NAME STREQUAL "SunOS")
-    target_link_libraries(main_lib INTERFACE util)
-  endif()
 endif()
 
 if(CMAKE_SYSTEM_NAME MATCHES "Windows")
diff -ruwN source/src/nvim/os/os_defs.h source-new/src/nvim/os/os_defs.h
--- source/src/nvim/os/os_defs.h	2025-07-13 01:34:12.000000000 +0700
+++ source-new/src/nvim/os/os_defs.h	2025-09-16 13:45:00.379142388 +0700
@@ -28,6 +28,8 @@
 
 #if !defined(NAME_MAX) && defined(_XOPEN_NAME_MAX)
 # define NAME_MAX _XOPEN_NAME_MAX
+#elif !defined(NAME_MAX)
+# define NAME_MAX 255
 #endif
 
 #define BASENAMELEN (NAME_MAX - 5)