Put extensions in Lua module instead of sneaking them in environment

Note that neither .cache/config.lua nor .cache/site-tree.json get
updated when EXTENSIONS changes.  This could be hacked as follows:

    config = EXTENSIONS="$(EXTENSIONS)"

    ifneq "$(shell test -f $(config_token) && cat $(config_token))"     \
    "$(shell ./generate-config-token.py $(config))"

    .PHONY: $(lua_config) $(site_tree) $(config_token)
    endif

Plus a recipe for config_token, and some dependencies on it.

1 files changed, 2 insertions, 1 deletions

diff --git a/repo/www/helpers.py b/repo/www/helpers.py
index 434ef6c..f76fa02 100644
--- a/repo/www/helpers.py
+++ b/repo/www/helpers.py
@@ -1,7 +1,7 @@
 from collections import defaultdict
 from dataclasses import dataclass, field
 from itertools import chain
-from os import path
+from os import environ, path
 from subprocess import run
 from typing import Iterator
 
@@ -67,4 +67,5 @@ def pandoc(page, output, template, filters, title=None, site_title=None):
     if site_title is not None:
         cmd += ('-T', site_title)
 
+    environ['LUA_PATH'] = '.cache/?.lua;;'
     run(cmd, check=True)