kinnala/README.md

## README.md

      
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              README.md
            
          
    This is a remainder for myself because I need to run Mathematica once a year.
Often the version I use is different from nixpkgs.
First you find a copy of Mathematica_12.1.0_LINUX.sh or similar and find its sha256sum.
Then you go to nixpkgs
and copy all Mathematica files to a local directory.
You need to modify default.nix and wrap its contents into
let pkgs = import <nixpkgs> {};
in pkgs.callPackage (
  # whatever is in default.nix
) {}

Next modify sha256 checksum and filename in l10n.nix to match what you have above.
Run nix-store --add-fixed sha256 Mathematica_12.1.0_LINUX.sh.
Finally, running nix-build default.nix will install Mathematica to Nix store.