diff -ur libpeas-1.30.0/loaders/lua5.1/meson.build libpeas-1.30.0.new/loaders/lua5.1/meson.build
--- libpeas-1.30.0/loaders/lua5.1/meson.build	2021-03-19 21:24:38.792421600 -0300
+++ libpeas-1.30.0.new/loaders/lua5.1/meson.build	2021-07-01 17:01:43.185470314 -0300
@@ -1,39 +1,39 @@
-lua51_loader_name = 'lua51loader'
+lua_loader_name = 'lualoader'
 
-lua51_lgi_version = lua51_lgi_dep.version()
-lua51_lgi_version_arr = lua51_lgi_version.split('.')
-lua51_lgi_version_major = lua51_lgi_version_arr[0].to_int()
-lua51_lgi_version_minor = lua51_lgi_version_arr[1].to_int()
-lua51_lgi_version_micro = lua51_lgi_version_arr[2].to_int()
+lua_lgi_version = lua_lgi_dep.version()
+lua_lgi_version_arr = lua_lgi_version.split('.')
+lua_lgi_version_major = lua_lgi_version_arr[0].to_int()
+lua_lgi_version_minor = lua_lgi_version_arr[1].to_int()
+lua_lgi_version_micro = lua_lgi_version_arr[2].to_int()
 
-lua51_loader_c = files(
+lua_loader_c = files(
   'peas-lua-internal.c',
   'peas-lua-utils.c',
   'peas-plugin-loader-lua.c',
 )
 
-subdir('resources') # Declares 'lua51_loader_res'
+subdir('resources') # Declares 'lua_loader_res'
 
-lua51_loader_deps = [
+lua_loader_deps = [
   libpeas_dep,
-  lua51_dep,
-  lua51_lgi_dep,
+  lua_dep,
+  lua_lgi_dep,
   luajit_dep,
 ]
 
-lua51_loader_c_args = [
+lua_loader_c_args = [
   '-DHAVE_CONFIG_H',
-  '-DLGI_MAJOR_VERSION=@0@'.format(lua51_lgi_version_major),
-  '-DLGI_MINOR_VERSION=@0@'.format(lua51_lgi_version_minor),
-  '-DLGI_MICRO_VERSION=@0@'.format(lua51_lgi_version_micro),
+  '-DLGI_MAJOR_VERSION=@0@'.format(lua_lgi_version_major),
+  '-DLGI_MINOR_VERSION=@0@'.format(lua_lgi_version_minor),
+  '-DLGI_MICRO_VERSION=@0@'.format(lua_lgi_version_micro),
 ]
 
-lua51_loader_sha = shared_module(
-  lua51_loader_name,
-  lua51_loader_c + lua51_loader_res,
+lua_loader_sha = shared_module(
+  lua_loader_name,
+  lua_loader_c + lua_loader_res,
   include_directories: rootdir,
-  dependencies: lua51_loader_deps,
-  c_args: lua51_loader_c_args,
+  dependencies: lua_loader_deps,
+  c_args: lua_loader_c_args,
   install: true,
   install_dir: join_paths(
     pkglibdir,
diff -ur libpeas-1.30.0/loaders/lua5.1/resources/meson.build libpeas-1.30.0.new/loaders/lua5.1/resources/meson.build
--- libpeas-1.30.0/loaders/lua5.1/resources/meson.build	2021-03-19 21:24:38.793421700 -0300
+++ libpeas-1.30.0.new/loaders/lua5.1/resources/meson.build	2021-07-01 17:07:37.886494127 -0300
@@ -1,4 +1,4 @@
-lua51_loader_res = gnome.compile_resources(
+lua_loader_res = gnome.compile_resources(
   'peas-lua-resources',
   'peas-lua.gresource.xml',
   export: true,
diff -ur libpeas-1.30.0/loaders/meson.build libpeas-1.30.0.new/loaders/meson.build
--- libpeas-1.30.0/loaders/meson.build	2021-03-19 21:24:38.793421700 -0300
+++ libpeas-1.30.0.new/loaders/meson.build	2021-07-01 17:00:19.665464707 -0300
@@ -1,4 +1,4 @@
-if build_lua51_loader == true
+if build_lua_loader == true
   subdir('lua5.1')
 endif
 
diff -ur libpeas-1.30.0/meson.build libpeas-1.30.0.new/meson.build
--- libpeas-1.30.0/meson.build	2021-03-19 21:24:38.795421600 -0300
+++ libpeas-1.30.0.new/meson.build	2021-07-01 16:59:23.066460907 -0300
@@ -135,42 +135,42 @@
 endif
 
 pygobject_dep = dependency('pygobject-3.0', version: pygobject_req, required: false)
-lua51_dep = dependency('lua51', version: lua_req, required: false)
-if not lua51_dep.found()
-  lua51_dep = dependency('lua-5.1', version: lua_req, required: false)
+lua_dep = dependency('lua', version: lua_req, required: false)
+if not lua_dep.found()
+  lua_dep = dependency('lua', version: lua_req, required: false)
 endif
 luajit_dep = dependency('luajit', version: luajit_req, required: false)
 lua_lgi_found = false
 lua_lgi_ver = 'not found'
-lua51_prg = find_program('lua5.1', required: false)
-if not lua51_prg.found()
-  lua51_prg = find_program('lua51', required: false)
+lua_prg = find_program('lua', required: false)
+if not lua_prg.found()
+  lua_prg = find_program('lua', required: false)
 endif
 luajit_prg = find_program('luajit', required: false)
 xmllint_prg = find_program('xmllint', required: false)
 
 if cc.get_id() == 'msvc'
   if luajit_prg.found()
-    # luajit has lua51.lib as its import library
-    lua_names = ['lua51']
+    # luajit has lua.lib as its import library
+    lua_names = ['lua']
   else
-    lua_names = ['lua53', 'lua52', 'lua51']
+    lua_names = ['lua53', 'lua52', 'lua']
   endif
 
   lua_headers = ['lua.h', 'lualib.h', 'lauxlib.h']
   # On Windows, the lua program may be named as lua.exe
   foreach lua: lua_names + ['lua']
-    if not lua51_prg.found() and not luajit_prg.found()
-      lua51_prg = find_program(lua, required: false)
+    if not lua_prg.found() and not luajit_prg.found()
+      lua_prg = find_program(lua, required: false)
     endif
-    if lua51_prg.found()
+    if lua_prg.found()
       if lua != 'lua'
-        lua51_dep = cc.find_library(lua, has_headers: lua_headers, required: false)
+        lua_dep = cc.find_library(lua, has_headers: lua_headers, required: false)
       endif
     endif
   endforeach
 
-  if not lua51_dep.found() and not luajit_dep.found()
+  if not lua_dep.found() and not luajit_dep.found()
     foreach lualib: lua_names
       if luajit_prg.found()
         if not luajit_dep.found()
@@ -178,9 +178,9 @@
         endif
       endif
 
-      if lua51_prg.found()
-        if not lua51_dep.found()
-          lua51_dep = cc.find_library(lualib, has_headers: lua_headers, required: false)
+      if lua_prg.found()
+        if not lua_dep.found()
+          lua_dep = cc.find_library(lualib, has_headers: lua_headers, required: false)
         endif
       endif
     endforeach
@@ -189,7 +189,7 @@
 
 lua_found = false
 
-if (luajit_dep.found() and luajit_prg.found()) or (lua51_dep.found() and lua51_prg.found())
+if (luajit_dep.found() and luajit_prg.found()) or (lua_dep.found() and lua_prg.found())
   lua_found = true
 endif
 
@@ -197,13 +197,13 @@
     if luajit_prg.found()
         lua_prg = luajit_prg
     else
-        lua_prg = lua51_prg
+        lua_prg = lua_prg
     endif
     lua_lgi_check = run_command(lua_prg, ['-e', 'print(require("lgi")._VERSION)'])
     if lua_lgi_check.returncode() == 0
         lua_lgi_ver = lua_lgi_check.stdout().strip()
         if lua_lgi_ver.version_compare(lua_lgi_req)
-            lua51_lgi_dep = declare_dependency(version: lua_lgi_ver)
+            lua_lgi_dep = declare_dependency(version: lua_lgi_ver)
             lua_lgi_found = true
         endif
     endif
@@ -284,10 +284,10 @@
   generate_gir = false
 endif
 
-build_lua51_loader = get_option('lua51')
-lua51_found = (luajit_dep.found() or lua51_dep.found()) and lua_lgi_found
-if build_lua51_loader and not lua51_found
-  build_lua51_loader = false
+build_lua_loader = get_option('lua')
+lua_found = (luajit_dep.found() or lua_dep.found()) and lua_lgi_found
+if build_lua_loader and not lua_found
+  build_lua_loader = false
 endif
 
 build_python2_loader = get_option('python2')
@@ -333,7 +333,7 @@
   '     Glade catalog: @0@'.format(install_glade_catalog),
   '     GTK+ widgetry: @0@'.format(build_gtk_widgetry),
   '     Introspection: @0@'.format(generate_gir),
-  '   Lua 5.1 support: @0@'.format(build_lua51_loader),
+  '   Lua 5.1 support: @0@'.format(build_lua_loader),
   '  Python 2 support: @0@'.format(build_python2_loader),
   '  Python 3 support: @0@'.format(build_python3_loader),
   '',
diff -ur libpeas-1.30.0/meson_options.txt libpeas-1.30.0.new/meson_options.txt
--- libpeas-1.30.0/meson_options.txt	2021-03-19 21:24:38.795421600 -0300
+++ libpeas-1.30.0.new/meson_options.txt	2021-07-01 16:53:42.004438010 -0300
@@ -1,4 +1,4 @@
-option('lua51',
+option('lua',
        type: 'boolean', value: true,
        description: 'Enable Lua 5.1 support (requires lua-lgi)')
 
diff -ur libpeas-1.30.0/peas-demo/plugins/meson.build libpeas-1.30.0.new/peas-demo/plugins/meson.build
--- libpeas-1.30.0/peas-demo/plugins/meson.build	2021-03-19 21:24:38.796421800 -0300
+++ libpeas-1.30.0.new/peas-demo/plugins/meson.build	2021-07-01 17:04:28.632481421 -0300
@@ -1,6 +1,6 @@
 subdir('helloworld')
 
-if build_lua51_loader == true
+if build_lua_loader == true
   subdir('luahello')
 endif
 
diff -ur libpeas-1.30.0/tests/libpeas/meson.build libpeas-1.30.0.new/tests/libpeas/meson.build
--- libpeas-1.30.0/tests/libpeas/meson.build	2021-03-19 21:24:38.805421600 -0300
+++ libpeas-1.30.0.new/tests/libpeas/meson.build	2021-07-01 17:05:39.608486186 -0300
@@ -8,8 +8,8 @@
 
 libpeas_tests_c_args = ['-UG_DISABLE_ASSERT', '-UG_DISABLE_CAST_CHECKS']
 
-if build_lua51_loader == true
-  libpeas_tests_sources += [['extension-lua', [lua51_dep, luajit_dep]]]
+if build_lua_loader == true
+  libpeas_tests_sources += [['extension-lua', [lua_dep, luajit_dep]]]
 endif
 
 if build_python3_loader == true
diff -ur libpeas-1.30.0/tests/libpeas/plugins/meson.build libpeas-1.30.0.new/tests/libpeas/plugins/meson.build
--- libpeas-1.30.0/tests/libpeas/plugins/meson.build	2021-03-19 21:24:38.806421800 -0300
+++ libpeas-1.30.0.new/tests/libpeas/plugins/meson.build	2021-07-01 17:09:15.934500709 -0300
@@ -24,7 +24,7 @@
 subdir('embedded')
 subdir('extension-c')
 
-if build_lua51_loader == true
+if build_lua_loader == true
   subdir('extension-lua')
 endif