How to build digikam?

Help
1

I’m trying to track down a problem with digikam (see Digikam crashing on right-click after upgrade). I’d like to build the package locally for troubleshooting (and to try to upgrade to version 8.2.0).

I’ve created a directory and copied the default.nix from git, but when I run nix-build, I get:

       Nix attempted to evaluate a function as a top level expression; in
       this case it must have its arguments supplied either by default
       values, or passed explicitly with '--arg' or '--argstr'. See
       https://nixos.org/manual/nix/stable/language/constructs.html#functions.

       at /home/mike/src/digikam/default.nix:1:43:

            1| {  mkDerivation, config, lib, fetchpatch, fetchurl, cmake, doxygen, extra-cmake-modules, wrapGAppsHook
             |                                           ^
            2|```
2

try this nix-build -E '(import <nixpkgs> {}).libsForQt5.callPackage ./default.nix {}'

edit: include libsForQt5

Nix Pill on callPackage

3

Thanks! Is there a . missing after the right paren? When I add that, I get:

       … while calling the 'derivationStrict' builtin

         at /builtin/derivation.nix:9:12: (source not available)

       … while evaluating derivation 'digikam-8.1.0'
         whose name attribute is located at /nix/store/cghziybin05ridg1w8pdvp66kfvr3pma-nixos-22.05.998.d17a56d90ec/nixos/pkgs/stdenv/generic/make-derivation.nix:278:7

       … while evaluating attribute 'buildInputs' of derivation 'digikam-8.1.0'

         at /nix/store/cghziybin05ridg1w8pdvp66kfvr3pma-nixos-22.05.998.d17a56d90ec/nixos/pkgs/stdenv/generic/make-derivation.nix:322:7:

          321|       depsHostHost                = lib.elemAt (lib.elemAt dependencies 1) 0;
          322|       buildInputs                 = lib.elemAt (lib.elemAt dependencies 1) 1;
             |       ^
          323|       depsTargetTarget            = lib.elemAt (lib.elemAt dependencies 2) 0;

       error: attribute 'cudaSupport' missing

       at /home/mike/src/digikam/default.nix:57:17:

           56|
           57| , cudaSupport ? config.cudaSupport
             |                 ^
           58| , cudaPackages ? {}```
4

whoops, yes. edited my post. My build errors with:

CMake Error at core/libs/metadataengine/CMakeLists.txt:106 (include_directories):
  Error evaluating generator expression:

    $<TARGET_PROPERTY:exiv2lib,INTERFACE_INCLUDE_DIRECTORIES>

  Target "exiv2lib" not found.

Edit: This was on my laptop and copied default.nix from a forked nixpkgs whoops

5

When using callPackage, you can choose to pass in a different variant, e.g.
when a different version of the toolkit suffices

mypkg = callPackage { cudaPackages = cudaPackages_11_5; }

Might help? See https://github.com/ttuegel/nixpkgs/blob/81aa88d4c485c0f41e4d3515508726ed750e936e/doc/languages-frameworks/cuda.section.md

which version of NixOS are you running by chance? 22.05?

6

I’m running 23.11 for the system, and unstable for use packages.

I don’t understand how to specify cudaPackages for the build.

7

hmm. I’m building it with a locally cloned nixpkgs since I’m on a flakes setup. Perhaps there’s a mismatch with your channels and packages? I just tried this morning and it builds fine:

nix-build -I nixpkgs=/home/rjpc/git/nixpkgs blah blah

rjpc /tmp/junk/result/bin % ./digikam --help   
Usage: ./digikam [options]
Professional Photo Management with the Power of Open Source - A KDE Family Project

Options:
  -h, --help                  Displays help on commandline options.
  --help-all                  Displays help including Qt specific options.
  -v, --version               Displays version information.

Might be worth showing us output of nix-shell -p nix-info --run "nix-info -m"

I’m also gonna ping @TLATER since they might be able to help?

8

That command returns:

 - system: `"x86_64-linux"`
 - host os: `Linux 6.1.68, NixOS, 23.11 (Tapir), 23.11.20231220.d65bcea`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.1`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos````

I'm also using flakes. I'm taking my system from 23.11, but using "unstable" for my user packages.
9

I’m not sure of the flakes way of using nix build tbh. If anyone does please share :slight_smile:

Could you try shallow cloning nixpkgs and building it that way as I did above (via -I)?

10

I’ve cloned the repo, but am not sure what to do next. Do I need to build everything? What directory should I be in, and what command do I run–i.e., what should I replace blah blah with in your command: nix-build -I nixpkgs=/home/rjpc/git/nixpkgs blah blah?

11

From ~//src/nixpkgs/pkgs/applications/graphics/digikam I run:

nix-build -I /home/mike/src/nixpkgs/ -E '(import <nixpkgs> {}).libsForQt5.callPackage ./default.nix {}'

I get:

       … while calling the 'derivationStrict' builtin

         at /builtin/derivation.nix:9:12: (source not available)

       … while evaluating derivation 'digikam-8.1.0'
         whose name attribute is located at /nix/store/cghziybin05ridg1w8pdvp66kfvr3pma-nixos-22.05.998.d17a56d90ec/nixos/pkgs/stdenv/generic/make-derivation.nix:278:7

       … while evaluating attribute 'buildInputs' of derivation 'digikam-8.1.0'

         at /nix/store/cghziybin05ridg1w8pdvp66kfvr3pma-nixos-22.05.998.d17a56d90ec/nixos/pkgs/stdenv/generic/make-derivation.nix:322:7:

          321|       depsHostHost                = lib.elemAt (lib.elemAt dependencies 1) 0;
          322|       buildInputs                 = lib.elemAt (lib.elemAt dependencies 1) 1;
             |       ^
          323|       depsTargetTarget            = lib.elemAt (lib.elemAt dependencies 2) 0;

       error: attribute 'cudaSupport' missing

       at /home/mike/src/nixpkgs/pkgs/applications/graphics/digikam/default.nix:57:17:

           56|
           57| , cudaSupport ? config.cudaSupport
             |                 ^
           58| , cudaPackages ? {}```
12

The cudaSupport thing is part of top-level/config.nix. Normally that’s supposed to be imported as part of import <nixpkgs> { }, but it looks like that’s not happening here for some reason. Probably a bug?

Try these as a workaround for now:

nix-build -I /home/mike/src/nixpkgs/ -E '(import <nixpkgs> { config = { cudaSupport = false; }; }).libsForQt5.callPackage ./default.nix {  }'

nix-build -I /home/mike/src/nixpkgs/ -E '(import <nixpkgs> { }; }).libsForQt5.callPackage ./default.nix {  config = { cudaSupport = false; } }'
1 Like
13 
nix build .#digikam

in your checkout of nixpkgs should do it. Or just nix build nixpkgs#digikam to let nix do the checkout for you.

14

@mikelygee

Was just about to come back and type

nix-build -I nixpkgs=/home/mike/src/nixpkgs -E '(import <nixpkgs> {}).libsForQt5.callPackage ./default.nix { cudaSupport = true; }

the above should also work along with the commands @TLATER wrote. I’m running this right now and my CPU is getting hot
edit: built successfully! I hope it works for you also.

15

oh nice, so easy. Thanks! How can one pass options like cudaSupport with nix build nixpkgs#blah sorry if this is a silly syntax question.

1 Like
16

You can do that with the --expr arg: nix build - Nix Reference Manual

1 Like
17

That first “workaround” line has it building–thanks! We’ll see where that leads me.

1 Like
18

It builds, and the executable exhibits the problem I’m trying to troubleshoot. How can I get it to build with debug symbols, so I can use gdb to figure out what’s going on?

19

Might find that answer here Adding debug symbols to package from nixpkgs - #3 by danieldk

20

Thanks. I can’t figure out how to incorporate enableDebugging into the command line.