stdenv-linux is not allowed to refer to openssl

[KiaraGrouwstra]

Pinning on NixOS/nixpkgs@322b204, I get:

building '/nix/store/zrbwvf62yhbmyslny9z1vi0mlwqmhc88-stdenv-linux.drv'...
output '/nix/store/8kw2jpl2ycdfs2z6yybmbqwcxgkjqzbr-stdenv-linux' is not allowed to refer to the following paths:
      /nix/store/35pnww4fs64gk56kvn1ikzbl8as9l9b2-openssl-1.0.2o
output '/nix/store/rqwkqhc1c7nw991xkqbyy6ipk2mn2253-stdenv-linux' is not allowed to refer to the following paths:
      /nix/store/35pnww4fs64gk56kvn1ikzbl8as9l9b2-openssl-1.0.2o
cannot build derivation '/nix/store/f7z1i0d8m48gpnl78bcm837fcx1fm2zi-nix-2.0.4.drv': 1 dependencies couldn't be built

Trying lukego/blog#17, git bisect says the culprit is NixOS/nixpkgs@837ecc2.

[KiaraGrouwstra]

I'll cough this up to the advice at NixOS/nixpkgs#45308 (comment) -- don't pin, use channels.