devenv's nix breaks when ~/.config/nixpkgs/config.nix is a symlink

[Mic92]

Describe the bug

Evaluating nixpkgs inside nixpkgs leads to error: getting status of '/home/joerg/.config/.homesick/repos/dotfiles/home/.config/nixpkgs/config.nix': No such file or directory

My configuration is actually in /home/joerg/.homesick/repos/dotfiles/home/.config/nixpkgs/config.nix not in /home/joerg/.config/.homesick/repos/dotfiles/home/.config/nixpkgs/config.nix. This works with the latest nix master but is broken in devshell.

Steps to reproduce

$ nix shell github:cachix/devenv/v0.5 
$ ls -la ~/.config/nixpkgs
lrwxrwxrwx joerg users 48 B 5 years ago  /home/joerg/.config/nixpkgs@ ⇒ ../.homesick/repos/dotfiles/home/.config/nixpkgs
$ mkdir example
$ cd example
$ devenv shell
$ devenv.nix does not exist. Maybe you want to run first $ devenv init
Building shell ...
warning: creating lock file '/home/joerg/example/devenv.lock'
error:
       at /home/joerg/example/.devenv.flake.nix:13:14:

           12|     let
           13|       pkgs = import nixpkgs { system = "x86_64-linux"; };
             |              ^
           14|       lib = pkgs.lib;

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/impure.nix:14:1:

           13|
           14| { # We put legacy `system` into `localSystem`, if `localSystem` was not passed.
             | ^
           15|   # If neither is passed, assume we are building packages on the current

       … while calling anonymous lambda

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/impure.nix:87:1:

           86|
           87| import ./. (builtins.removeAttrs args [ "system" ] // {
             | ^
           88|   inherit config overlays localSystem;

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/default.nix:19:1:

           18|
           19| { # The system packages will be built on. See the manual for the
             | ^
           20|   # subtle division of labor between these two `*System`s and the three

       … while calling anonymous lambda

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/default.nix:131:4:

          130|
          131| in checked pkgs
             |    ^
          132|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/default.nix:58:108:

           57|     throwIfNot (lib.isList crossOverlays) "The crossOverlays argument to nixpkgs must be a list."
           58|     lib.foldr (x: throwIfNot (lib.isFunction x) "All crossOverlays passed to nixpkgs must be functions.") (r: r) crossOverlays
             |                                                                                                            ^
           59|     ;

       … while calling anonymous lambda

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/default.nix:129:10:

          128|
          129|   pkgs = boot stages;
             |          ^
          130|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/stdenv/booter.nix:42:1:

           41| # other words, this does a foldr not foldl.
           42| stageFuns: let
             | ^
           43|

       … while calling anonymous lambda

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/stdenv/booter.nix:142:4:

          141|
          142| in dfold folder postStage (_: {}) withAllowCustomOverrides
             |    ^
          143|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/stdenv/booter.nix:60:27:

           59|   */
           60|   dfold = op: lnul: rnul: list:
             |                           ^
           61|     let

       … while calling 'dfold'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/stdenv/booter.nix:72:13:

           71|       lapp = lnul cur;
           72|       cur = go lapp 0;
             |             ^
           73|     in cur;

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/stdenv/booter.nix:63:18:

           62|       len = builtins.length list;
           63|       go = pred: n:
             |                  ^
           64|         if n == len

       … while calling 'go'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/stdenv/booter.nix:78:30:

           77|   # isn't already set.
           78|   withAllowCustomOverrides = lib.lists.imap1
             |                              ^
           79|     (index: stageFun: prevStage:

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/lists.nix:117:14:

          116|   */
          117|   imap1 = f: list: genList (n: f (n + 1) (elemAt list n)) (length list);
             |              ^
          118|

       … while calling 'imap1'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/stdenv/booter.nix:85:6:

           84|       // (stageFun prevStage))
           85|     (lib.lists.reverseList stageFuns);
             |      ^
           86|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/lists.nix:394:17:

          393|   */
          394|   reverseList = xs:
             |                 ^
          395|     let l = length xs; in genList (n: elemAt xs (l - n - 1)) l;

       … while calling 'reverseList'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/default.nix:125:12:

          124|
          125|   stages = stdenvStages {
             |            ^
          126|     inherit lib localSystem crossSystem config overlays crossOverlays;

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/stdenv/default.nix:7:1:

            6|
            7| { # Args just for stdenvs' usage
             | ^
            8|   lib

       … while calling anonymous lambda

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/default.nix:88:12:

           87|   # take all the rest as-is
           88|   config = lib.showWarnings configEval.config.warnings configEval.config;
             |            ^
           89|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/trivial.nix:414:28:

          413|
          414|   showWarnings = warnings: res: lib.foldr (w: x: warn w x) res warnings;
             |                            ^
          415|

       … while calling 'showWarnings'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/trivial.nix:414:33:

          413|
          414|   showWarnings = warnings: res: lib.foldr (w: x: warn w x) res warnings;
             |                                 ^
          415|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/lists.nix:53:20:

           52|   */
           53|   foldr = op: nul: list:
             |                    ^
           54|     let

       … while calling 'foldr'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/lists.nix:60:8:

           59|         else op (elemAt list n) (fold' (n + 1));
           60|     in fold' 0;
             |        ^
           61|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/lists.nix:56:15:

           55|       len = length list;
           56|       fold' = n:
             |               ^
           57|         if n == len

       … while calling 'fold''

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:341:9:

          340|         options = checked options;
          341|         config = checked (removeAttrs config [ "_module" ]);
             |         ^
          342|         _module = checked (config._module);

       … while evaluating the attribute 'config.warnings'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/attrsets.nix:530:19:

          529|           g =
          530|             name: value:
             |                   ^
          531|             if isAttrs value && cond value

       … while calling 'g'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/attrsets.nix:533:20:

          532|               then recurse (path ++ [name]) value
          533|               else f (path ++ [name]) value;
             |                    ^
          534|         in mapAttrs g;

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:265:72:

          264|           # For definitions that have an associated option
          265|           declaredConfig = mapAttrsRecursiveCond (v: ! isOption v) (_: v: v.value) options;
             |                                                                        ^
          266|

       … while calling anonymous lambda

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:723:9:

          722|     in warnDeprecation opt //
          723|       { value = builtins.addErrorContext "while evaluating the option `${showOption loc}':" value;
             |         ^
          724|         inherit (res.defsFinal') highestPrio;

       … while evaluating the attribute 'value'

       … while evaluating the option `_module.freeformType':

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:758:5:

          757|     # Type-check the remaining definitions, and merge them. Or throw if no definitions.
          758|     mergedValue =
             |     ^
          759|       if isDefined then

       … while evaluating the attribute 'mergedValue'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:752:9:

          751|       in {
          752|         values = defs''';
             |         ^
          753|         inherit (defs'') highestPrio;

       … while evaluating the attribute 'values'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:851:7:

          850|     in {
          851|       values = concatMap (def: if getPrio def == highestPrio then [(strip def)] else []) defs;
             |       ^
          852|       inherit highestPrio;

       … while evaluating the attribute 'values'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:562:22:

          561|       # extract the definitions for each loc
          562|       defnsByName' = byName "config" (module: value:
             |                      ^
          563|           [{ inherit (module) file; inherit value; }]

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:537:25:

          536|       */
          537|       byName = attr: f: modules:
             |                         ^
          538|         zipAttrsWith (n: concatLists)

       … while calling 'byName'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:558:21:

          557|       # an attrset 'name' => list of submodules that define ‘name’.
          558|       defnsByName = byName "config" (module: value:
             |                     ^
          559|           map (config: { inherit (module) file; inherit config; }) (pushDownProperties value)

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:537:25:

          536|       */
          537|       byName = attr: f: modules:
             |                         ^
          538|         zipAttrsWith (n: concatLists)

       … while calling 'byName'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:512:8:

          511|     mergeModules' prefix modules
          512|       (concatMap (m: map (config: { file = m._file; inherit config; }) (pushDownProperties m.config)) modules);
             |        ^
          513|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:512:19:

          511|     mergeModules' prefix modules
          512|       (concatMap (m: map (config: { file = m._file; inherit config; }) (pushDownProperties m.config)) modules);
             |                   ^
          513|

       … while calling anonymous lambda

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:512:73:

          511|     mergeModules' prefix modules
          512|       (concatMap (m: map (config: { file = m._file; inherit config; }) (pushDownProperties m.config)) modules);
             |                                                                         ^
          513|

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:790:24:

          789|   */
          790|   pushDownProperties = cfg:
             |                        ^
          791|     if cfg._type or "" == "merge" then

       … while calling 'pushDownProperties'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:448:11:

          447|           options = m.options or {};
          448|           config = addFreeformType (addMeta (m.config or {}));
             |           ^
          449|         }

       … while evaluating the attribute 'config'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:448:20:

          447|           options = m.options or {};
          448|           config = addFreeformType (addMeta (m.config or {}));
             |                    ^
          449|         }

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:434:25:

          433|         else config;
          434|       addFreeformType = config: if m ? freeformType
             |                         ^
          435|         then mkMerge [ config { _module.freeformType = m.freeformType; } ]

       … while calling 'addFreeformType'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:448:37:

          447|           options = m.options or {};
          448|           config = addFreeformType (addMeta (m.config or {}));
             |                                     ^
          449|         }

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/modules.nix:431:17:

          430|     let
          431|       addMeta = config: if m ? meta
             |                 ^
          432|         then mkMerge [ config { meta = m.meta; } ]

       … while calling 'addMeta'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/default.nix:82:9:

           81|         _file = "nixpkgs.config";
           82|         config = config1;
             |         ^
           83|       })

       … while evaluating the attribute 'config'

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/pkgs/top-level/default.nix:73:8:

           72|   config1 =
           73|     if lib.isFunction config0
             |        ^
           74|     then config0 { inherit pkgs; }

       … from call site

       at «github:NixOS/nixpkgs/e58a7747db96c23b8a977e7c1bbfc5753b81b6fa»/lib/trivial.nix:448:16:

          447|   */
          448|   isFunction = f: builtins.isFunction f ||
             |                ^
          449|     (f ? __functor && isFunction (f.__functor f));

       … while calling 'isFunction'

       error: getting status of '/home/joerg/.config/.homesick/repos/dotfiles/home/.config/nixpkgs/config.nix': No such file or directory

Version

v0.5