+ nix testimonial

Author: srid

Diff for: 2016101.md

@@ -41,3 +41,7 @@ Haskell development environment facilitated by Nix:
 Haskell Nix development workflow:
 
 > it was **super easy** to build and test.
+
+[jaygray0919](https://github.com/srid/neuron/issues/179#issuecomment-628759870) on upgrading neuron via Nix:
+
+> another flawless install! watching a neuron install is a lesson in software distribution; i've never seen anything like it. from one perspective: 'jeez there are a lot of dependencies.' from another perspective: 'jeez, i could never build anything with so many dependencies - it would overwhelm my mental model of an application.'