gistfile0.txt

building all machine configurations...
error: --- ThrownError --- nix-build
Nextcloud v18 has been removed from `nixpkgs` as the support for it was dropped
by upstream in 2021-01. Please upgrade to at least Nextcloud v19 by
declaring

    services.nextcloud.package = pkgs.nextcloud19;

in your NixOS config.

[1] https://docs.nextcloud.com/server/18/admin_manual/release_schedule.html

---- show-trace ----
trace: while evaluating the attribute 'nextcloud18'
at: (34:3) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/servers/nextcloud/default.nix

    33| in {
    34|   nextcloud18 = throw ''
      |   ^
    35|     Nextcloud v18 has been removed from `nixpkgs` as the support for it was dropped

trace: while evaluating the attribute 'nextcloud18'
at: (6614:48) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/top-level/all-packages.nix

  6613| 
  6614|   inherit (callPackage ../servers/nextcloud {})
      |                                                ^
  6615|     nextcloud18 nextcloud19 nextcloud20 nextcloud21;

trace: while evaluating 'attrByPath'
at: (24:35) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/lib/attrsets.nix

    23|   */
    24|   attrByPath = attrPath: default: e:
      |                                   ^
    25|     let attr = head attrPath;

trace: from call site
at: (29:12) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/lib/attrsets.nix

    28|       else if e ? ${attr}
    29|       then attrByPath (tail attrPath) default e.${attr}
      |            ^
    30|       else default;

trace: while evaluating 'attrByPath'
at: (24:35) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/lib/attrsets.nix

    23|   */
    24|   attrByPath = attrPath: default: e:
      |                                   ^
    25|     let attr = head attrPath;

trace: from call site
at: (61:38) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/nixos/lib/make-options-doc/default.nix

    60|           path = args.path or [ args.name ];
    61|           package = args.package or (lib.attrByPath path (throw "Invalid package attribute path `${toString path}' found while evaluating `relatedPackages' of option `${optName}'") pkgs);
      |                                      ^
    62|         in "<listitem>"

trace: while evaluating 'describe'
at: (56:18) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/nixos/lib/make-options-doc/default.nix

    55|                   else p;
    56|       describe = args:
      |                  ^
    57|         let

trace: from call site
at: (70:60) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/nixos/lib/make-options-doc/default.nix

    69|         + "</listitem>";
    70|     in "<itemizedlist>${lib.concatStringsSep "\n" (map (p: describe (unpack p)) packages)}</itemizedlist>";
      |                                                            ^
    71| 

trace: while evaluating anonymous lambda
at: (70:57) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/nixos/lib/make-options-doc/default.nix

    69|         + "</listitem>";
    70|     in "<itemizedlist>${lib.concatStringsSep "\n" (map (p: describe (unpack p)) packages)}</itemizedlist>";
      |                                                         ^
    71| 

trace: from call site
trace: while evaluating 'genRelatedPackages'
at: (51:34) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/nixos/lib/make-options-doc/default.nix

    50|   #   (either of `name`, `path` is required, the rest are optional).
    51|   genRelatedPackages = packages: optName:
      |                                  ^
    52|     let

trace: from call site
at: (39:99) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/nixos/lib/make-options-doc/default.nix

    38|     // lib.optionalAttrs (opt ? type) { type = substFunction opt.type; }
    39|     // lib.optionalAttrs (opt ? relatedPackages && opt.relatedPackages != []) { relatedPackages = genRelatedPackages opt.relatedPackages opt.name; }
      |                                                                                                   ^
    40|    );

trace: while evaluating the attribute 'buildCommand' of the derivation 'options-docbook.xml'
at: (7:7) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/build-support/trivial-builders.nix

     6|     stdenv.mkDerivation ({
     7|       name = lib.strings.sanitizeDerivationName name;
      |       ^
     8|       inherit buildCommand;

trace: while evaluating the attribute 'buildCommand' of the derivation 'generated-docbook'
at: (7:7) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/build-support/trivial-builders.nix

     6|     stdenv.mkDerivation ({
     7|       name = lib.strings.sanitizeDerivationName name;
      |       ^
     8|       inherit buildCommand;

trace: while evaluating the attribute 'buildCommand' of the derivation 'nixos-manual-combined'
at: (7:7) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/build-support/trivial-builders.nix

     6|     stdenv.mkDerivation ({
     7|       name = lib.strings.sanitizeDerivationName name;
      |       ^
     8|       inherit buildCommand;

trace: while evaluating the attribute 'buildCommand' of the derivation 'manual-olinkdb'
at: (7:7) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/build-support/trivial-builders.nix

     6|     stdenv.mkDerivation ({
     7|       name = lib.strings.sanitizeDerivationName name;
      |       ^
     8|       inherit buildCommand;

trace: while evaluating the attribute 'buildCommand' of the derivation 'nixos-manpages'
at: (7:7) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/build-support/trivial-builders.nix

     6|     stdenv.mkDerivation ({
     7|       name = lib.strings.sanitizeDerivationName name;
      |       ^
     8|       inherit buildCommand;

trace: while evaluating the attribute 'passAsFile' of the derivation 'system-path'
at: (7:7) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/build-support/trivial-builders.nix

     6|     stdenv.mkDerivation ({
     7|       name = lib.strings.sanitizeDerivationName name;
      |       ^
     8|       inherit buildCommand;

trace: while evaluating 'check'
at: (345:15) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/types.nix

   344|       name = "path";
   345|       check = x: isCoercibleToString x && builtins.substring 0 1 (toString x) == "/";
      |               ^
   346|       merge = mergeEqualOption;

trace: from call site
at: (546:22) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   545|       if isDefined then
   546|         if all (def: type.check def.value) defsFinal then type.merge loc defsFinal
      |                      ^
   547|         else let allInvalid = filter (def: ! type.check def.value) defsFinal;

trace: while evaluating anonymous lambda
at: (546:17) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   545|       if isDefined then
   546|         if all (def: type.check def.value) defsFinal then type.merge loc defsFinal
      |                 ^
   547|         else let allInvalid = filter (def: ! type.check def.value) defsFinal;

trace: from call site
at: (546:12) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   545|       if isDefined then
   546|         if all (def: type.check def.value) defsFinal then type.merge loc defsFinal
      |            ^
   547|         else let allInvalid = filter (def: ! type.check def.value) defsFinal;

trace: while evaluating the attribute 'value'
at: (557:27) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   556|     optionalValue =
   557|       if isDefined then { value = mergedValue; }
      |                           ^
   558|       else {};

trace: while evaluating anonymous lambda
at: (354:14) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/types.nix

   353|       merge = loc: defs:
   354|         map (x: x.value) (filter (x: x ? value) (concatLists (imap1 (n: def:
      |              ^
   355|           imap1 (m: def':

trace: from call site
trace: while evaluating the attribute 'serviceDirectories' of the derivation 'dbus-1'
at: (7:7) in file: /nix/store/ki85w24ipk7czgqqr1n86h37y1by5hfx-source/pkgs/build-support/trivial-builders.nix

     6|     stdenv.mkDerivation ({
     7|       name = lib.strings.sanitizeDerivationName name;
      |       ^
     8|       inherit buildCommand;

trace: while evaluating 'check'
at: (345:15) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/types.nix

   344|       name = "path";
   345|       check = x: isCoercibleToString x && builtins.substring 0 1 (toString x) == "/";
      |               ^
   346|       merge = mergeEqualOption;

trace: from call site
at: (546:22) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   545|       if isDefined then
   546|         if all (def: type.check def.value) defsFinal then type.merge loc defsFinal
      |                      ^
   547|         else let allInvalid = filter (def: ! type.check def.value) defsFinal;

trace: while evaluating anonymous lambda
at: (546:17) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   545|       if isDefined then
   546|         if all (def: type.check def.value) defsFinal then type.merge loc defsFinal
      |                 ^
   547|         else let allInvalid = filter (def: ! type.check def.value) defsFinal;

trace: from call site
at: (546:12) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   545|       if isDefined then
   546|         if all (def: type.check def.value) defsFinal then type.merge loc defsFinal
      |            ^
   547|         else let allInvalid = filter (def: ! type.check def.value) defsFinal;

trace: while evaluating the attribute 'mergedValue'
at: (544:5) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   543|     # Type-check the remaining definitions, and merge them. Or throw if no definitions.
   544|     mergedValue =
      |     ^
   545|       if isDefined then

trace: while evaluating the option `environment.etc.dbus-1.source':
trace: while evaluating the attribute 'value'
at: (512:9) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

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

trace: while evaluating anonymous lambda
at: (139:72) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   138|           # For definitions that have an associated option
   139|           declaredConfig = mapAttrsRecursiveCond (v: ! isOption v) (_: v: v.value) options;
      |                                                                        ^
   140| 

trace: from call site
at: (297:20) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/attrsets.nix

   296|               then recurse (path ++ [name]) value
   297|               else f (path ++ [name]) value;
      |                    ^
   298|         in mapAttrs g set;

trace: while evaluating 'g'
at: (294:19) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/attrsets.nix

   293|           g =
   294|             name: value:
      |                   ^
   295|             if isAttrs value && cond value

trace: from call site
trace: while evaluating the attribute 'source'
trace: while evaluating anonymous lambda
at: (20:20) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/nixos/modules/system/etc/etc.nix

    19|     /* !!! Use toXML. */
    20|     sources = map (x: x.source) etc';
      |                    ^
    21|     targets = map (x: x.target) etc';

trace: from call site
trace: while evaluating the attribute 'sources' of the derivation 'etc'
at: (12:5) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/nixos/modules/system/etc/etc.nix

    11|   etc = pkgs.stdenvNoCC.mkDerivation {
    12|     name = "etc";
      |     ^
    13| 

trace: while evaluating the attribute 'value'
at: (379:44) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   378|       defnsByName' = byName "config" (module: value:
   379|           [{ inherit (module) file; inherit value; }]
      |                                            ^
   380|         ) configs;

trace: while evaluating 'dischargeProperties'
at: (596:25) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   595|   */
   596|   dischargeProperties = def:
      |                         ^
   597|     if def._type or "" == "merge" then

trace: from call site
at: (525:137) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   524|         defs' = concatMap (m:
   525|           map (value: { inherit (m) file; inherit value; }) (builtins.addErrorContext "while evaluating definitions from `${m.file}':" (dischargeProperties m.value))
      |                                                                                                                                         ^
   526|         ) defs;

trace: while evaluating definitions from `/nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/nixos/modules/system/etc/etc.nix':
trace: while evaluating anonymous lambda
at: (524:28) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   523|         # Process mkMerge and mkIf properties.
   524|         defs' = concatMap (m:
      |                            ^
   525|           map (value: { inherit (m) file; inherit value; }) (builtins.addErrorContext "while evaluating definitions from `${m.file}':" (dischargeProperties m.value))

trace: from call site
at: (524:17) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   523|         # Process mkMerge and mkIf properties.
   524|         defs' = concatMap (m:
      |                 ^
   525|           map (value: { inherit (m) file; inherit value; }) (builtins.addErrorContext "while evaluating definitions from `${m.file}':" (dischargeProperties m.value))

trace: while evaluating the attribute 'values'
at: (637:7) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   636|     in {
   637|       values = concatMap (def: if getPrio def == highestPrio then [(strip def)] else []) defs;
      |       ^
   638|       inherit highestPrio;

trace: while evaluating the attribute 'values'
at: (538:9) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   537|       in {
   538|         values = defs''';
      |         ^
   539|         inherit (defs'') highestPrio;

trace: while evaluating the attribute 'mergedValue'
at: (544:5) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   543|     # Type-check the remaining definitions, and merge them. Or throw if no definitions.
   544|     mergedValue =
      |     ^
   545|       if isDefined then

trace: while evaluating the option `system.activationScripts.etc.text':
trace: while evaluating the attribute 'value'
at: (512:9) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

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

trace: while evaluating anonymous lambda
at: (139:72) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/modules.nix

   138|           # For definitions that have an associated option
   139|           declaredConfig = mapAttrsRecursiveCond (v: ! isOption v) (_: v: v.value) options;
      |                                                                        ^
   140| 

trace: from call site
at: (297:20) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/attrsets.nix

   296|               then recurse (path ++ [name]) value
   297|               else f (path ++ [name]) value;
      |                    ^
   298|         in mapAttrs g set;

trace: while evaluating 'g'
at: (294:19) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/attrsets.nix

   293|           g =
   294|             name: value:
      |                   ^
   295|             if isAttrs value && cond value

trace: from call site
trace: while evaluating the attribute 'text'
trace: while evaluating the attribute 'text'
at: (9:5) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/nixos/modules/system/activation/activation-script.nix

     8|   addAttributeName = mapAttrs (a: v: v // {
     9|     text = ''
      |     ^
    10|       #### Activation script snippet ${a}:

trace: while evaluating 'id'
at: (14:5) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/trivial.nix

    13|     # The value to return
    14|     x: x;
      |     ^
    15| 

trace: from call site
trace: while evaluating 'textClosureMap'
at: (75:35) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/lib/strings-with-deps.nix

    74| 
    75|   textClosureMap = f: predefined: names:
      |                                   ^
    76|     concatStringsSep "\n" (map f (textClosureList predefined names));

trace: from call site
at: (101:18) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/nixos/modules/system/activation/activation-script.nix

   100|                 withHeadlines = addAttributeName set';
   101|               in textClosureMap id (withHeadlines) (attrNames withHeadlines)
      |                  ^
   102|             }

trace: while evaluating the attribute 'system.activationScripts.script'
at: (80:9) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/nixos/modules/system/activation/activation-script.nix

    79|       apply = set: {
    80|         script =
      |         ^
    81|           ''

trace: while evaluating the attribute 'activationScript' of the derivation 'nixos-system-c1-21.03pre269343.758b29b5a28'
at: (95:5) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/nixos/modules/system/activation/top-level.nix

    94|   baseSystem = pkgs.stdenvNoCC.mkDerivation {
    95|     name = "nixos-system-${config.system.name}-${config.system.nixos.label}";
      |     ^
    96|     preferLocalBuild = true;

trace: while evaluating anonymous lambda
at: (222:54) in file: /nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nix/eval-machine-info.nix

   221|         mkdir -p $out
   222|         ${toString (lib.attrValues (lib.mapAttrs (n: v: ''
      |                                                      ^
   223|           ln -s ${v.config.system.build.toplevel} $out/${n}

trace: from call site
trace: while evaluating the attribute 'buildCommand' of the derivation 'nixops-machines'
at: (7:7) in file: /nix/store/3pnl7wqmg45h1m9bp913pgw338714nj8-nixos-21.03pre269343.758b29b5a28/nixos/pkgs/build-support/trivial-builders.nix

     6|     stdenv.mkDerivation ({
     7|       name = lib.strings.sanitizeDerivationName name;
      |       ^
     8|       inherit buildCommand;

Traceback (most recent call last):
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/deployment.py", line 882, in build_configs
    configs_path = subprocess.check_output(
  File "/nix/store/yl69v76azrz4daiqksrhb8nnmdiqdjg9-python3-3.8.8/lib/python3.8/subprocess.py", line 415, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/nix/store/yl69v76azrz4daiqksrhb8nnmdiqdjg9-python3-3.8.8/lib/python3.8/subprocess.py", line 516, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['nix-build', '--show-trace', '-I', 'nixops=/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/../nix', '--arg', 'networkExprs', '[ "/home/cab/data/cab/infra/ops-example/machines.nix" "/tmp/nixops-tmpqchqz4pq/physical.nix" ]', '--arg', 'args', '{}', '--argstr', 'uuid', '979dcd3c-8757-11eb-b0b2-c8f750688b8c', '--argstr', 'deploymentName', 'test', '--arg', 'pluginNixExprs', '[]', '/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/../nix/eval-machine-info.nix', '--arg', 'names', '[ "c1" ]', '-A', 'machines', '-o', '/tmp/nixops-tmpqchqz4pq/configs', '--dry-run']' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/bin/.nixops-wrapped", line 9, in <module>
    sys.exit(main())
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/__main__.py", line 710, in main
    args.op(args)
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/script_defs.py", line 617, in op_deploy
    depl.deploy(
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/deployment.py", line 1479, in deploy
    self.run_with_notify("deploy", lambda: self._deploy(**kwargs))
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/deployment.py", line 1468, in run_with_notify
    f()
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/deployment.py", line 1479, in <lambda>
    self.run_with_notify("deploy", lambda: self._deploy(**kwargs))
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/deployment.py", line 1394, in _deploy
    self.configs_path = self.build_configs(
  File "/nix/store/634mllawhzpf6665cjd7lpyxavyg1ckk-python3.8-nixops-2.0.0/lib/python3.8/site-packages/nixops/deployment.py", line 900, in build_configs
    raise Exception("unable to build all machine configurations")
Exception: unable to build all machine configurations