docs: update decision on MSRV

This only talks about testing. Once Subplot is in Debian stable, that
version of Subplot will need to work with the version Rust in that
version Debian, but that's out of our hands. As upstream, we can
continue to target the next version of Debian stable, i.e. testing.

Sponsored-by: author

1 files changed, 10 insertions, 12 deletions

diff --git a/DECISIONS.md b/DECISIONS.md
index bc6b766..98422fb 100644
--- a/DECISIONS.md
+++ b/DECISIONS.md
@@ -13,6 +13,16 @@ Each decision should have its own heading. Newest decision should come
 first. Updated or overturned decisions should have their section
 updated to note their status, without moving them.
 
+## Minimum Supported Rust Version
+
+Date: 2023-03-21
+
+What: We decided that Subplot would support an MSRV of the version of
+Rust in the Debian "testing" branch. We can bump our explicit MSRV
+version when Debian gets a new version.
+
+Who: Daniel, Lars
+
 ## Threshold for refactoring
 
 Date: 2022-10-23
@@ -21,18 +31,6 @@ What: Instead of trying to do a whole code base tidy up, we'll
 continuously do smaller refactoring changes when we see something that
 needs improvement.
 
-## Minimum Supported Rust Version
-
-Date: 2021-10-09
-
-What: We decided that Subplot would support an MSRV of 1.48.0 in
-order that it can be maximally useful to the Sequoia-PGP project.
-If and when we gain other large client projects, we will endeavour
-to support an MSRV which makes them all happy. We will walk the
-MSRV forward as and when our client projects move forward.
-
-Who: Daniel, Lars
-
 ## Do not clear/override all environment variables
 
 Date: 2021-10-08