Install Mathematica in NixOS

README.md

First you find a copy of Mathematica_13.2.1_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 version.nix to match what you have above. Run nix hash file Mathematica_13.2.1_BNDL_LINUX.sh. Finally, running nix-build will install Mathematica to Nix store.

From the Nix reference 127 doesn't seem to be in use!
Run again with max verbosity gives this, which doesn't shed much light for me.

WARNING: No Avahi Daemon was detected so some Kernel Discovery features will
not be available. You can install Avahi Daemon using your distribution's
package management system.
waiting for children
building of '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv!out' from .drv file: read 1 bytes

waiting for children
building of '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv!out' from .drv file: read 45 bytes
Go to http://avahi.org for more information.
waiting for children
building of '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv!out' from .drv file: read 1 bytes

waiting for children
building of '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv!out' from .drv file: got EOF
building of '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv!out' from .drv file: woken up
building of '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv!out' from .drv file: build done
killing process 6195
builder process for '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv' finished
killing all processes running under uid '30001'
lock released on '/nix/store/vp27jh8g9krp8pfqmbf09qjv88q384ig-mathematica-13.3.1.lock'
building of '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv!out' from .drv file: done
building of '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv!out' from .drv file: goal destroyed
error: builder for '/nix/store/d095ldrs9k6hj38ml9d57xx8lw601hl2-mathematica-13.3.1.drv' failed with exit code 127

Wow you're right haha. I'm going to spin up a qemu instance of NixOS. I need to see for myself. I'll try installing 13.3.1. I'll let you know about my results :)