Pin nixpkgs in nix2 style

tweag / capability

Extensional capabilities and deriving combinators

BSD 3-Clause "New" or "Revised" License

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Pin nixpkgs in nix2 style #70

Closed MIJOTHY closed 5 years ago

MIJOTHY commented 5 years ago

Running nix-shell fails due to builder = nixcfg.shell; being impure (see NixOS/nixpkgs#30399). This commit fixes this by using the idiomatic nix2 method of nixpkgs pinning. The sha256 has changed as it is now the hash of the unpacked archive. See: https://github.com/tweag/capability/issues/69