Benjamin Hipple 16cdff0711 ion: 1.0.5 -> unstable-2020-03-22 ...

The app is still maintained upstream, but they aren't cutting releases on
crates.io anymore:
https://crates.io/crates/ion-shell

This fixes the build with the latest Rust toolchain by upgrading to the current
commit off the project's `master`.

ZHF: #80379

2020-03-27 19:47:33 -04:00

..

default.nix

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