these 3 derivations will be built:
  /nix/store/0aac5r38zpz39y71jypd3dwll4vp1l8m-restrict-message.drv
  /nix/store/qbpmjs9802rg2zsy87nx7a38ygj02g73-baserom.us.z64.drv
  /nix/store/3i70l55ks5hma7w4wqq8rj6irf8mw1hd-sm64ex-0.pre+date=2021-11-30.drv
these 2 paths will be fetched (314.8 KiB download, 337.3 KiB unpacked):
  /nix/store/6vcmsfc6969phw8jbx4y7rfafk9iyd6x-hexdump-util-linux-2.38.1
  /nix/store/hssbib00kqf1haz6lnjxyvvshlf8plix-util-linux-2.38.1-man
building '/nix/store/0aac5r38zpz39y71jypd3dwll4vp1l8m-restrict-message.drv'
building '/nix/store/8x1scrks008527flxd0scxb9wmavx5v0-baserom.us.z64.drv'
baserom.us.z64> 
baserom.us.z64> ***
baserom.us.z64> This nix expression requires that baserom.us.z64 is
baserom.us.z64> already part of the store. To get this file you can dump your Super Mario 64 cartridge's contents
baserom.us.z64> and add it to the nix store with nix-store --add-fixed sha256 <FILE>.
baserom.us.z64> Note that if you are not using a US baserom, you must overwrite the "region" attribute with either "eu" or "jp".
baserom.us.z64> 
baserom.us.z64> ***
baserom.us.z64> 
error: Cannot build '/nix/store/8x1scrks008527flxd0scxb9wmavx5v0-baserom.us.z64.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/h7jbvsvas5h7gxfr90f8rxkc8455zp0z-baserom.us.z64
       Last 9 log lines:
       >
       > ***
       > This nix expression requires that baserom.us.z64 is
       > already part of the store. To get this file you can dump your Super Mario 64 cartridge's contents
       > and add it to the nix store with nix-store --add-fixed sha256 <FILE>.
       > Note that if you are not using a US baserom, you must overwrite the "region" attribute with either "eu" or "jp".
       >
       > ***
       >
       For full logs, run:
         nix log /nix/store/8x1scrks008527flxd0scxb9wmavx5v0-baserom.us.z64.drv
error: build of resolved derivation '/nix/store/8x1scrks008527flxd0scxb9wmavx5v0-baserom.us.z64.drv' failed
error: Cannot build '/nix/store/3i70l55ks5hma7w4wqq8rj6irf8mw1hd-sm64ex-0.pre+date=2021-11-30.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/19sfqfvax4az2fvvaqqj23df3wh7qn2y-sm64ex-0.pre+date=2021-11-30