id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
810507413,MDExOlB1bGxSZXF1ZXN0NTc1MTg3NDU3,1229,ensure immutable databses when starting in configuration directory mode with,295329,closed,0,,,3,2021-02-17T20:18:26Z,2022-04-22T13:16:36Z,2021-03-29T00:17:32Z,CONTRIBUTOR,simonw/datasette/pulls/1229,"fixes #1224 

This PR ensures all databases found in a configuration directory that match the files in `inspect-data.json` will be set to `immutable` as outlined in https://docs.datasette.io/en/latest/settings.html#configuration-directory-mode

specifically on building the `datasette` instance it checks:
- if `immutables` is an empty tuple - as passed by the cli code
- if `immutables` is the default function value `None` - when it's not explicitly set

And correctly builds the immutable database list from the `inspect-data[file]` keys.

Note for this to work the `inspect-data.json` file must contain `file` paths which are relative to the configuration directory otherwise the file paths won't match and the dbs won't be set to immutable. 

I couldn't find an easy way to test this due to the way `make_app_client` works, happy to take directions on adding a test for this. 

I've updated the relevant docs as well, i.e. use the `inspect` cli cmd from the config directory path to create the relevant file
```
cd $config_dir
datasette inspect *.db --inspect-file=inspect-data.json
```
https://docs.datasette.io/en/latest/performance.html#using-datasette-inspect",107914493,pull,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/1229/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",0,