add comment about rls

rust-lang · Oct 28, 2019 · b227894 · b227894
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commit b227894
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diff --git a/text/0000-sandbox-environment.md b/text/0000-sandbox-environment.md
@@ -139,6 +139,9 @@ an intermediary.
 
 This proposal gives maximal control when needed, without changing the default behaviours at all.
 
+When `rustc` is embedded or long-running, such as in `rls` or `rust-analyzer`, then its necessary to explicitly
+set the logical environment for each crate, rather than just inheriting the process environment.
+
 # Prior art
 [prior-art]: #prior-art