two kinds of brain dump

STYLE.md

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+# Some notes on Nix language style
+
+In an attempt to keep this more consistent than NixWRT ended up being,
+here is a Nix language style guide for this repo.
+
+* favour `callPackage` over raw `import` for calling derivations
+or any function that may generate one - any code that might need
+`pkgs` or parts of it.
+
+* prefer `let inherit (quark) up down strange charm` over `with
+quark`, in any context where the scope is more than a single
+expression or there is more than one reference to `up`, `down` etc.
+`with pkgs; [ foo bar baz]` is OK,
+`with lib; stdenv.mkDerivation { ... } ` is usually not.
+
+* <liminix> is defined only when running tests, so don't refer to it in
+"application" code
+
+* the parameters to a derivation are sorted alphabetically, except for
+`lib`, `stdenv` and maybe other non-package "special cases"
+
+* indentation is whatever emacs nix-mode says it is