Rough procedure for updating all cargoSha256/cargoHash

update-cargo-hashes.txt

Rough procedure for updating cargo hashes. Warning: this still requires a lot
of manual work to cover all bases. Based on:

https://github.com/NixOS/nixpkgs/pull/112764/commits/2650d5d2b8c19844224f8b368887153e2f18fdae

# Invalidate all hashes

rg -l "cargoHash" | grep "\.nix" |  xargs -n1 sed -i -re 's/cargoHash = "..../cargoHash = "sha256-1234/g'
rg -l "cargoSha256" | grep "\.nix" |  xargs -n1 sed -i -re 's/cargoSha256 = "[^s].../cargoSha256 = "1234/g'
rg -l "cargoSha256" | grep "\.nix" |  xargs -n1 sed -i -re 's/cargoSha256 = "sha256-..../cargoSha256 = "sha256-1234/g'

# Rebuild, logging hash mismatches
nix-build -k -E '
      let pkgs = import ./. {};
      in with builtins; with pkgs.lib;
      mapAttrs (n: v: v.cargoDeps) (filterAttrs (n: v:
        (tryEval v).success && isDerivation v &&
        hasAttr "cargoDeps" v.drvAttrs && v.drvAttrs.cargoDeps != null
      ) pkgs)' |& tee /tmp/build-cargoDepsAttrs
      
# Update hashes
awk '
      BEGIN {print "rg -l \"(cargoSha256|cargoHash)\" pkgs | grep \"\\.nix\" | xargs sed -i \\"}
      /specified: sha256-/ {wanted=$2}
      /got:    sha256-/ {
        wantedNoPrefix=wanted
        sub(/sha256-/, "", wantedNoPrefix)
        #printf("-e \"s|%s|%s|\"",wantedNoPrefix,$2);
        printf(" -e \"s|%s|%s|\"",wanted,$2);
        system("wanted=`nix hash to-base32 --type sha256 " wanted "`; \
                got=`nix hash to-base32 --type sha256 " $2 "`; \
                echo \" -e \\\"s|$wanted|$got|\\\" \\\\\"");
      }' /tmp/build-cargoDepsAttrs > /tmp/updateCargoDeps