Make a json file containing the following structure

{
    "own_url": "https://your_url",
    "target_dir": "/directory/to/write/feeds/in",
    "limit_recent": 200,
    "podcasts": {
        "podcastname": "https://www.supla.fi/supla/episodenumber"
    }
}

where

• own_url should contain the base URL the feeds will be hosted at (the RSS format specifies that it should contain information about where it is hosted. This can probably be a file:// url or a dummy url if you aren't hosting the feed anywhere);
• target_dir the directory on the current system to place the generated files in;
• limit_recent specifies how many episodes to put in the feed per podcast (default: 200); and
• podcasts is an object where
  • each key is the name that will be used to generate the rss file (eg. podcastname will become podcastname.rss, and
  • each value is a link to one of the episodes in the series you want to make the feed for (eg. https://www.supla.fi/supla/3320811).

Run supla-rssproxy --config-file <filename>.

supla-rssproxy will fetch data from the Supla API and write RSS files into target_dir.

WARNING: Files with the same name that already exist in the target directory will be replaced!! This is an intentional design decision to allow updating the same files.

Thanks to @0x416C6578 on Twitter for actually finding the location of the URLs for me when I'd missed them completely.

• Strings use " always, because I can't stop myself
• PEP 8