In reply to @szucsitg:matrix.org
Maybe now?

In reply to @peter-lustig:matrix.org

systemd.services.myapp = {
    description = "My application";
    wantedBy = ["multi-user.target"];
    wants = ["network-online.target"];
    serviceConfig = {
      Type = "simple";
      Environment = "PORT=5173";
      ExecStart = "${pkgs.nodejs_20}/bin/node .";
      WorkingDirectory = inputs.myapp.packages.${pkgs.system}.default;
      Restart = "always";
    };
  };

In reply to @lily:lily.flowers
Could you share /etc/systemd/system/services/myapp.service from the system too, so we can see what like the workingdirectory and stuff expanded to?

[Unit]
Description=My application
Wants=network-online.target

[Service]
Environment="LOCALE_ARCHIVE=/nix/store/zi9m92xiz904cc6d9w41mb6c95q7yahn-glibc-locales-2.38-23/lib/locale/locale-archive"
Environment="PATH=/nix/store/vwkvhj69z4qqgmpa2lwm97kabf12p26r-coreutils-9.3/bin:/nix/store/qyzfglbrqb5ck0dgljplin2bvc4995w7-findutils-4.9.0/bin:/nix/store/p2r51wfg9m3ga7pp7avslpfhfa7w5y83-gnugrep-3.11/bin:/nix/store/g5p3ky90xa05ggg5szyb0pbbl2vp7n03-gnused-4.9/bin:/nix/store/vapnrxrw3b21c7ji61bmnbzl2cj1vl96-systemd-254.3/bin:/nix/store/vwkvhj69z4qqgmpa2lwm97kabf12p26r-coreutils-9.3/sbin:/nix/store/qyzfglbrqb5ck0dgljplin2bvc4995w7-findutils-4.9.0/sbin:/nix/store/p2r51wfg9m3ga7pp7avslpfhfa7w5y83-gnugrep-3.11/sbin:/nix/store/g5p3ky90xa05ggg5szyb0pbbl2vp7n03-gnused-4.9/sbin:/nix/store/vapnrxrw3b21c7ji61bmnbzl2cj1vl96-systemd-254.3/sbin"
Environment="TZDIR=/nix/store/cf0gxd6nyr6shkkn0ca82bap1x8r0f9x-tzdata-2023c/share/zoneinfo"



Environment=PORT=5173
ExecStart=/nix/store/17g2kfxglsl3rncfasqrxqs2g3bjin3k-nodejs-20.9.0/bin/node .
Restart=always
Type=simple
WorkingDirectory=/nix/store/xixmhd827wd95j6748xv3zyn5cf3kb9x-build-my-application

Lily Foster

In reply to @lily:lily.flowers
What's in /nix/store/xixmhd827wd95j6748xv3zyn5cf3kb9x-build-my-application? should just be the build dir with index.js, right?

In reply to @lily:lily.flowers
uhhh

In reply to @peter-lustig:matrix.org
but when I build locally with npm run build, then cd buildand run node ., everything just works

In reply to @lily:lily.flowers
can you share your derivation that you used to make the build dir?