Referencing outputs from another devenv

[domenkozar]

This is currently not trivial to do and requires documentation. Leave a thumps up as usual for prioritization.

[pchabros]

I'm trying to do this.

devenv.nix with output:

{ pkgs, ... }:
let
  sysPkgs = with pkgs; [
    git
    radianWrapper
  ];
  rPkgs = with pkgs.rPackages; [
    checkmate
    data_table
    devtools
    dplyr
    glue
    purrr
    shiny
    shinyjs
    stringr
    testthat
    tibble
    tidyselect
  ];
  rScript = x: ''
    Rscript -e "${x}"
  '';
in
{
  packages = sysPkgs ++ rPkgs;

  enterShell = rScript "devtools::load_all('package')";
  enterTest = rScript "devtools::test('package')";

  languages.r.enable = true;

  outputs.myPackage = pkgs.rPackages.buildRPackage {
    name = "myPackage";
    src = ./.
    buildInputs = [ pkgs.R ] ++ rPkgs;
  };
}

devenv.nix consumer:

{ pkgs, myPackage, ... }:

let
  sysPkgs = with pkgs; [
    git
    radianWrapper
  ];
  rPkgs = with pkgs.rPackages; [
    checkmate
    devtools
    purrr
    rex
    shinyWidgets
    shinycssloaders
    shinydashboard
    shinyjs
    waiter
  ];
  rScript = x: ''
    Rscript -e "${x}"
  '';
in
{
  packages = sysPkgs ++ rPkgs ++ [ myPackage ];
  enterShell = rScript "devtools::load_all('package')";
  enterTest = rScript "devtools::test('package')";

  languages.r.enable = true;
}

devenv.yaml consumer:

inputs:
  nixpkgs:
    url: github:cachix/devenv-nixpkgs/rolling
  myPackage:
    url: git+https://<repo-url>.git?ref=devenv&rev=4axs115b316b78cc4a9ac3b5bfaaccebfd71a861

and I'm getting the follwing error:

error:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:9:12:
            8|
            9|   strict = derivationStrict drvAttrs;
             |            ^
           10|

       … while evaluating derivation 'devenv-shell'
         whose name attribute is located at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/stdenv/generic/make-derivation.nix:331:7

       … while evaluating attribute 'DEVENV_PROFILE' of derivation 'devenv-shell'

       … while calling the 'getAttr' builtin
         at <nix/derivation-internal.nix>:19:19:
           18|       value = commonAttrs // {
           19|         outPath = builtins.getAttr outputName strict;
             |                   ^
           20|         drvPath = strict.drvPath;

       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:9:12:
            8|
            9|   strict = derivationStrict drvAttrs;
             |            ^
           10|

       … while evaluating derivation 'devenv-profile'
         whose name attribute is located at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/stdenv/generic/make-derivation.nix:331:7

       … while evaluating attribute 'passAsFile' of derivation 'devenv-profile'
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/build-support/trivial-builders/default.nix:69:9:
           68|         inherit buildCommand name;
           69|         passAsFile = [ "buildCommand" ]
             |         ^
           70|           ++ (derivationArgs.passAsFile or [ ]);

       … while evaluating the attribute 'passAsFile'
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/build-support/buildenv/default.nix:76:5:
           75|     # XXX: The size is somewhat arbitrary
           76|     passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else [ ];
             |     ^
           77|   }

       … while evaluating a branch condition
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/build-support/buildenv/default.nix:76:18:
           75|     # XXX: The size is somewhat arbitrary
           76|     passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else [ ];
             |                  ^
           77|   }

       … in the argument of the not operator
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/build-support/buildenv/default.nix:76:48:
           75|     # XXX: The size is somewhat arbitrary
           76|     passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else [ ];
             |                                                ^
           77|   }

       … while calling the 'lessThan' builtin
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/build-support/buildenv/default.nix:76:48:
           75|     # XXX: The size is somewhat arbitrary
           76|     passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else [ ];
             |                                                ^
           77|   }

       … while calling the 'stringLength' builtin
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/build-support/buildenv/default.nix:76:21:
           75|     # XXX: The size is somewhat arbitrary
           76|     passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else [ ];
             |                     ^
           77|   }

       … while calling the 'toJSON' builtin
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/build-support/buildenv/default.nix:58:12:
           57|             nativeBuildInputs buildInputs;
           58|     pkgs = builtins.toJSON (map (drv: {
             |            ^
           59|       paths =

       … while calling the 'map' builtin
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/pkgs/build-support/buildenv/default.nix:58:29:
           57|             nativeBuildInputs buildInputs;
           58|     pkgs = builtins.toJSON (map (drv: {
             |                             ^
           59|       paths =

       … from call site
         at «github:cachix/devenv/1f55f89ca32d617b7a7c18422e3c364cb003df3d»/src/modules/top-level.nix:15:13:
           14|     name = "devenv-profile";
           15|     paths = lib.flatten (builtins.map drvOrPackageToPaths config.packages);
             |             ^
           16|     ignoreCollisions = true;

       … while calling 'flatten'
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/lists.nix:383:13:
          382|   */
          383|   flatten = x:
             |             ^
          384|     if isList x

       … while calling the 'concatMap' builtin
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/lists.nix:385:10:
          384|     if isList x
          385|     then concatMap (y: flatten y) x
             |          ^
          386|     else [x];

       … while calling anonymous lambda
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/lists.nix:385:21:
          384|     if isList x
          385|     then concatMap (y: flatten y) x
             |                     ^
          386|     else [x];

       … from call site
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/lists.nix:385:24:
          384|     if isList x
          385|     then concatMap (y: flatten y) x
             |                        ^
          386|     else [x];

       … while calling 'flatten'
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/lists.nix:383:13:
          382|   */
          383|   flatten = x:
             |             ^
          384|     if isList x

       … while evaluating a branch condition
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/lists.nix:384:5:
          383|   flatten = x:
          384|     if isList x
             |     ^
          385|     then concatMap (y: flatten y) x

       … while calling the 'isList' builtin
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/lists.nix:384:8:
          383|   flatten = x:
          384|     if isList x
             |        ^
          385|     then concatMap (y: flatten y) x

       … while calling 'drvOrPackageToPaths'
         at «github:cachix/devenv/1f55f89ca32d617b7a7c18422e3c364cb003df3d»/src/modules/top-level.nix:8:25:
            7|
            8|   drvOrPackageToPaths = drvOrPackage:
             |                         ^
            9|     if drvOrPackage ? outputs then

       … while evaluating a branch condition
         at «github:cachix/devenv/1f55f89ca32d617b7a7c18422e3c364cb003df3d»/src/modules/top-level.nix:9:5:
            8|   drvOrPackageToPaths = drvOrPackage:
            9|     if drvOrPackage ? outputs then
             |     ^
           10|       builtins.map (output: drvOrPackage.${output}) drvOrPackage.outputs

       … from call site
         at «github:cachix/devenv/1f55f89ca32d617b7a7c18422e3c364cb003df3d»/src/modules/top-level.nix:9:8:
            8|   drvOrPackageToPaths = drvOrPackage:
            9|     if drvOrPackage ? outputs then
             |        ^
           10|       builtins.map (output: drvOrPackage.${output}) drvOrPackage.outputs

       … while calling anonymous lambda
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/types.nix:547:14:
          546|       merge = loc: defs:
          547|         map (x: x.value) (filter (x: x ? value) (concatLists (imap1 (n: def:
             |              ^
          548|           imap1 (m: def':

       … while evaluating the attribute 'value'
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/modules.nix:857:27:
          856|     optionalValue =
          857|       if isDefined then { value = mergedValue; }
             |                           ^
          858|       else {};

       … while calling the 'throw' builtin
         at «github:cachix/devenv-nixpkgs/4267e705586473d3e5c8d50299e71503f16a6fb6»/lib/modules.nix:848:12:
          847|         else let allInvalid = filter (def: ! type.check def.value) defsFinal;
          848|         in throw "A definition for option `${showOption loc}' is not of type `${type.description}'. Definition values:${showDefs allInvalid}"
             |            ^
          849|       else

       error:
       error: A definition for option `packages."[definition 4-entry 23]"' is not of type `package'. Definition values:
       - In `/home/pawel_chabros/dev/frontend/anxtheme/.bare/devenv/devenv.nix': <function>

✖ Command produced the following output:


Error:   × Command `/nix/store/kn810nyzgbladsx84w49nqvv2fhwqc3x-nix-devenv-
  │ 2.24.0pre20240910_1e61e9f/bin/nix --show-trace --extra-experimental-features nix-
  │ command --extra-experimental-features flakes --option warn-dirty false --keep-going
  │ --max-jobs 8 --option eval-cache false print-dev-env --profile /home/pawel_chabros/
  │ dev/frontend/anxtheme/.bare/devenv/.devenv/gc/shell --option extra-substituters
  │ https://devenv.cachix.org --option extra-trusted-public-keys devenv.cachix.org-
  │ 1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=` failed with with exit code 1

direnv: loading the environment failed
direnv: error exit status 1

[pchabros]

Ok, I had to change myPackage to myPackage.outputs.build.outputs.myPackage. Is it correct?