In reply to @avocadoom:avocadoom.de

Hi, I currently try to package a Hugo site which uses BabelJS to transpile the JS to a more commonly compatible format. While having success with other Javascript frontend frameworks, I always get the following error while trying to build the site:

       last 10 log lines:
       > npm ERR! errno -1
       > npm ERR!
       > npm ERR! Your cache folder contains root-owned files, due to a bug in
       > npm ERR! previous versions of npm which has since been addressed.
       > npm ERR!
       > npm ERR! To permanently fix this problem, please run:
       > npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"
       >
       > npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
       > npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal

Note, that this does not happen when building in a nix shell. This is how my current flake looks like.

{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  inputs.npmlock2nix = {
    url = "github:nix-community/npmlock2nix";
    flake = false;
  };

  outputs = { self, nixpkgs, npmlock2nix }:
    let
      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
        pkgs = import nixpkgs {
          inherit system;

          overlays = [
            (self: super: {
              nodejs = super.nodejs-18_x;
              pnpm = super.nodePackages.pnpm;
              npmlock2nix = super.callPackage npmlock2nix { };
            })
          ];
        };
      });
    in
    {
      devShells = forEachSupportedSystem ({ pkgs }: {
        default = pkgs.mkShell {
          packages = with pkgs; [
            nodejs-18_x
            hugo
            curl
            html-proofer
            just
            nodePackages."@babel/cli"
          ];
        };
      });
      packages = forEachSupportedSystem ({ pkgs }: {
        default = pkgs.stdenv.mkDerivation rec {
          __noChroot = true;
          name = "darmstadt.ccc.de";
          src = ./.;

          nativeBuildInputs = [
            pkgs.hugo
            pkgs.nodejs
          ];

          buildPhase = ''
              export HOME=./
              npm install
              npm run build
          '';

          installPhase = ''
            mkdir -p $out/bin
            cp -r $src/downloads $out/
          '';
        };
      });
    };
}

Dont be bothered by some imports, they are just the result of some tests. The sources can be found here: https://git.darmstadt.ccc.de/cda/chaos-darmstadt.de/-/tree/nix-flakes

I really hop to find some suggestions here since I spent the whole evening googling for similar problems without success.

thx in advance :)

In reply to @avocadoom:avocadoom.de

Hi, I currently try to package a Hugo site which uses BabelJS to transpile the JS to a more commonly compatible format. While having success with other Javascript frontend frameworks, I always get the following error while trying to build the site:

       last 10 log lines:
       > npm ERR! errno -1
       > npm ERR!
       > npm ERR! Your cache folder contains root-owned files, due to a bug in
       > npm ERR! previous versions of npm which has since been addressed.
       > npm ERR!
       > npm ERR! To permanently fix this problem, please run:
       > npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"
       >
       > npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
       > npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal

Note, that this does not happen when building in a nix shell. This is how my current flake looks like.

{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
  inputs.npmlock2nix = {
    url = "github:nix-community/npmlock2nix";
    flake = false;
  };

  outputs = { self, nixpkgs, npmlock2nix }:
    let
      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
        pkgs = import nixpkgs {
          inherit system;

          overlays = [
            (self: super: {
              nodejs = super.nodejs-18_x;
              pnpm = super.nodePackages.pnpm;
              npmlock2nix = super.callPackage npmlock2nix { };
            })
          ];
        };
      });
    in
    {
      devShells = forEachSupportedSystem ({ pkgs }: {
        default = pkgs.mkShell {
          packages = with pkgs; [
            nodejs-18_x
            hugo
            curl
            html-proofer
            just
            nodePackages."@babel/cli"
          ];
        };
      });
      packages = forEachSupportedSystem ({ pkgs }: {
        default = pkgs.stdenv.mkDerivation rec {
          __noChroot = true;
          name = "darmstadt.ccc.de";
          src = ./.;

          nativeBuildInputs = [
            pkgs.hugo
            pkgs.nodejs
          ];

          buildPhase = ''
              export HOME=./
              npm install
              npm run build
          '';

          installPhase = ''
            mkdir -p $out/bin
            cp -r $src/downloads $out/
          '';
        };
      });
    };
}

Dont be bothered by some imports, they are just the result of some tests. The sources can be found here: https://git.darmstadt.ccc.de/cda/chaos-darmstadt.de/-/tree/nix-flakes

I really hop to find some suggestions here since I spent the whole evening googling for similar problems without success.

thx in advance :)

In reply to @lily:lily.flowers
oh wait you're not using an npm builder that'll take care of setting up npm enough that running npm install could actually work... hmm...

warning: The interpretation of store paths arguments ending in `.drv` recently changed. If this command is now failing try again with '/nix/store/0rb9qgdsbkafx4s59jsa5lxhkhr5fsvv-darmstadt.ccc.de.drv^*'
@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking sources
unpacking source archive /nix/store/g5n23k8ahzdfgw7s8l40iqmvy21li8cr-kndykrdjyqs5jn478q753lcncfvv2l4z-source
source root is kndykrdjyqs5jn478q753lcncfvv2l4z-source
@nix { "action": "setPhase", "phase": "patchPhase" }
patching sources
@nix { "action": "setPhase", "phase": "updateAutotoolsGnuConfigScriptsPhase" }
updateAutotoolsGnuConfigScriptsPhase
@nix { "action": "setPhase", "phase": "configurePhase" }
configuring
no configure script, doing nothing
@nix { "action": "setPhase", "phase": "buildPhase" }
building

added 195 packages, and audited 196 packages in 2s

12 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities
npm notice
npm notice New major version of npm available! 9.5.1 -> 10.2.5
npm notice Changelog: https://github.com/npm/cli/releases/tag/v10.2.5
npm notice Run npm install -g npm@10.2.5 to update!
npm notice

> build
> hugo

WARN  config: languages.de.disabled: custom params on the language top level is deprecated and will be removed in a future release. Put the value below [languages.de.params]. See https://gohugo.io/content-management/multilingual/#changes-in-hugo-01120
Start building sites …
hugo v0.115.0+extended linux/amd64 BuildDate=unknown VendorInfo=nixpkgs

ERROR render of "page" failed: "/tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/layouts/_default/baseof.html:14:28": execute of template failed: template: _default/single.html:14:28: executing "_default/single.html" at <partial "scripts.html" .>: error calling partial: "/tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/layouts/partials/scripts.html:4:10": execute of template failed: template: partials/scripts.html:4:10: executing "partials/scripts.html" at <$main.Content>: error calling Content: BABEL: failed to transform "js/main.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/main.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-2696888417.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
ERROR BABEL: failed to transform "js/critical.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/critical.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-9938092.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
ERROR BABEL: failed to transform "js/calendar.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/calendar.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-45920551.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
ERROR BABEL: failed to transform "js/main.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/main.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-2696888417.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
Total in 1817 ms
Error: error building site: render: failed to render pages: render of "page" failed: "/tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/layouts/_default/baseof.html:13:8": execute of template failed: template: posts/single.html:13:8: executing "posts/single.html" at <partial "header.html" .>: error calling partial: "/tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/layouts/partials/header.html:43:20": execute of template failed: template: partials/header.html:43:20: executing "partials/header.html" at <$criticalScript.Content>: error calling Content: BABEL: failed to transform "js/critical.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/critical.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-9938092.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal

In reply to @avocadoom:avocadoom.de

warning: The interpretation of store paths arguments ending in `.drv` recently changed. If this command is now failing try again with '/nix/store/0rb9qgdsbkafx4s59jsa5lxhkhr5fsvv-darmstadt.ccc.de.drv^*'
@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking sources
unpacking source archive /nix/store/g5n23k8ahzdfgw7s8l40iqmvy21li8cr-kndykrdjyqs5jn478q753lcncfvv2l4z-source
source root is kndykrdjyqs5jn478q753lcncfvv2l4z-source
@nix { "action": "setPhase", "phase": "patchPhase" }
patching sources
@nix { "action": "setPhase", "phase": "updateAutotoolsGnuConfigScriptsPhase" }
updateAutotoolsGnuConfigScriptsPhase
@nix { "action": "setPhase", "phase": "configurePhase" }
configuring
no configure script, doing nothing
@nix { "action": "setPhase", "phase": "buildPhase" }
building

added 195 packages, and audited 196 packages in 2s

12 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities
npm notice
npm notice New major version of npm available! 9.5.1 -> 10.2.5
npm notice Changelog: https://github.com/npm/cli/releases/tag/v10.2.5
npm notice Run npm install -g npm@10.2.5 to update!
npm notice

> build
> hugo

WARN  config: languages.de.disabled: custom params on the language top level is deprecated and will be removed in a future release. Put the value below [languages.de.params]. See https://gohugo.io/content-management/multilingual/#changes-in-hugo-01120
Start building sites …
hugo v0.115.0+extended linux/amd64 BuildDate=unknown VendorInfo=nixpkgs

ERROR render of "page" failed: "/tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/layouts/_default/baseof.html:14:28": execute of template failed: template: _default/single.html:14:28: executing "_default/single.html" at <partial "scripts.html" .>: error calling partial: "/tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/layouts/partials/scripts.html:4:10": execute of template failed: template: partials/scripts.html:4:10: executing "partials/scripts.html" at <$main.Content>: error calling Content: BABEL: failed to transform "js/main.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/main.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-2696888417.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
ERROR BABEL: failed to transform "js/critical.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/critical.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-9938092.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
ERROR BABEL: failed to transform "js/calendar.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/calendar.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-45920551.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
ERROR BABEL: failed to transform "js/main.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/main.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-2696888417.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
Total in 1817 ms
Error: error building site: render: failed to render pages: render of "page" failed: "/tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/layouts/_default/baseof.html:13:8": execute of template failed: template: posts/single.html:13:8: executing "posts/single.html" at <partial "header.html" .>: error calling partial: "/tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/layouts/partials/header.html:43:20": execute of template failed: template: partials/header.html:43:20: executing "partials/header.html" at <$criticalScript.Content>: error calling Content: BABEL: failed to transform "js/critical.js" (text/javascript): npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal
: failed to execute binary "npx" with args [--no-install babel --config-file /tmp/nix-build-darmstadt.ccc.de.drv-0/kndykrdjyqs5jn478q753lcncfvv2l4z-source/babel.config.js --filename=js/critical.js --out-file=/tmp/nix-build-darmstadt.ccc.de.drv-0/compileOut-9938092.js]: npm ERR! code EPERM
npm ERR! syscall mkdir
npm ERR! path /var/empty/.npm
npm ERR! errno -1
npm ERR!
npm ERR! Your cache folder contains root-owned files, due to a bug in
npm ERR! previous versions of npm which has since been addressed.
npm ERR!
npm ERR! To permanently fix this problem, please run:
npm ERR!   sudo chown -R 30001:30000 "/var/empty/.npm"

npm ERR! Log files were not written due to an error writing to the directory: /var/empty/.npm/_logs
npm ERR! You can rerun the command with `--loglevel=verbose` to see the logs in your terminal

In reply to @avocadoom:avocadoom.de
as stated, I already tried that, which resulted in the same behavior

In reply to @lily:lily.flowers
apologies, i saw you stated that and was commenting on that specifically

In reply to @avocadoom:avocadoom.de
From reading the logs, I guess hugo just cant find babel, which is weird, since it works in a nix shell following the exact same steps as in the build process

In reply to @lily:lily.flowers
i'm gonna make a wild guess that babel is trying to write to your home dir. what if you add a export HOME="$TMPDIR"?