Build failure: kdenlive

[Alexuty07]

Nixpkgs version

• Unstable (26.05)

Steps to reproduce

nix build "github:NixOS/nixpkgs/nixos-unstable-small#kdePackages.kdenlive"

Can Hydra reproduce this build failure?

Yes, Hydra can reproduce this build failure.

Link to Hydra build job

https://hydra.nixos.org/build/319948713

Relevant log output

error: Cannot build '/nix/store/4p6qrxr196zmglqn3fmkfnqknlm6xpyy-kdenlive-25.12.1.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/hvnwc3gsdyp9c905qqznkjnswqkd9yp8-kdenlive-25.12.1-debug
         /nix/store/i9942fnrjvvkzb7whrb4dd2sssvcdrwx-kdenlive-25.12.1-dev
         /nix/store/y8kh15a70dah05lvgshxyyvnzd0wbzk4-kdenlive-25.12.1-devtools
         /nix/store/y9jjagxpx2fclvh5j9m6z1siylpmivkl-kdenlive-25.12.1
       Last 25 log lines:
       > [559/563] Building CXX object src/CMakeFiles/kdenlive.dir/kdenlive_autogen/mocs_compilation.cpp.o
       > [560/563] Building CXX object src/CMakeFiles/kdenlive.dir/qrc_uiresources.cpp.o
       > [561/563] Building CXX object src/CMakeFiles/kdenlive.dir/qrc_icons.cpp.o
       > [562/563] Building CXX object src/CMakeFiles/kdenlive.dir/main.cpp.o
       > [563/563] Linking CXX executable bin/kdenlive
       > FAILED: [code=1] bin/kdenlive
       > : && /nix/store/a245z3cvf9x9sn0xlk6k8j9xhxbhda1z-gcc-wrapper-15.2.0/bin/g++ -fno-operator-names -fno-exceptions -Wall -Wextra -Wcast-align -Wchar-subscripts -Wformat-security -Wno-long-long -Wpointer-arith -Wundef -Wnon-virtual-dtor -Woverloaded-virtual -Werror=return-type -Werror=init-self -Werror=undef -Wvla -Wdate-time -Wsuggest-override -Wlogical-op -pedantic -Wzero-as-null-pointer-constant -Wmissing-include-dirs -fdiagnostics-color=always -Wno-variadic-macros  -O3 -DNDEBUG -Wl,--enable-new-dtags src/CMakeFiles/kdenlive.dir/kdenlive_autogen/mocs_compilation.cpp.o src/CMakeFiles/kdenlive.dir/main.cpp.o src/CMakeFiles/kdenlive.dir/qrc_icons.cpp.o src/CMakeFiles/kdenlive.dir/qrc_uiresources.cpp.o -o bin/kdenlive  -Wl,-rpath,::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::  src/CMakeFiles/kdenliveLib_resources_1.dir/./.qt/rcc/qrc_qmake_org_kde_kdenlive_init.cpp.o  src/CMakeFiles/kdenliveLib_resources_2.dir/./.qt/rcc/qrc_kdenliveLib_raw_qml_0_init.cpp.o  src/CMakeFiles/kdenliveLibplugin_init.dir/./kdenliveLibplugin_init_autogen/mocs_compilation.cpp.o  src/CMakeFiles/kdenliveLibplugin_init.dir/./kdenliveLibplugin_init.cpp.o  lib/libkdenliveLib.a  bin/org/kde/kdenlive/libkdenliveLibplugin.a  lib/libkdenliveLib.a  /nix/store/jrqy6g7azd23yciygmsrrza6s50zwxwv-kio-6.22.0/lib/libKF6KIOFileWidgets.so.6.22.0  /nix/store/slm56mrxwj3sp4sk7lm6wbka3yqsfidy-kbookmarks-6.22.0/lib/libKF6Bookmarks.so.6.22.0  /nix/store/hzgrwwsvjbbrd5g9k8ncxp8fsbgcpf80-knewstuff-6.22.0/lib/libKF6NewStuffWidgets.so.6.22.0  /nix/store/hzgrwwsvjbbrd5g9k8ncxp8fsbgcpf80-knewstuff-6.22.0/lib/libKF6NewStuffCore.so.6.22.0  /nix/store/zkli71r0hpsqzch59xjqwfwqr5w98sp0-attica-6.22.0/lib/libKF6Attica.so.6.22.0  /nix/store/mikj1j730z261rn4w4bj8mcnwiamz9z6-knotifyconfig-6.22.0/lib/libKF6NotifyConfig.so.6.22.0  /nix/store/jrqy6g7azd23yciygmsrrza6s50zwxwv-kio-6.22.0/lib/libKF6KIOWidgets.so.6.22.0  /nix/store/jrqy6g7azd23yciygmsrrza6s50zwxwv-kio-6.22.0/lib/libKF6KIOGui.so.6.22.0  /nix/store/jrqy6g7azd23yciygmsrrza6s50zwxwv-kio-6.22.0/lib/libKF6KIOCore.so.6.22.0  /nix/store/2nd600rcx3nxvz5rn1qwy6m2rmzjz8y3-kcrash-6.22.0/lib/libKF6Crash.so.6.22.0  /nix/store/bcs1ah9j5hlvyd85hxwp7fqv4zzyzhyn-kjobwidgets-6.22.0/lib/libKF6JobWidgets.so.6.22.0  /nix/store/v16zmvj81vqsi32fykh5ak2fg8jz4773-kservice-6.22.0/lib/libKF6Service.so.6.22.0  /nix/store/w25kaxq4cwyqsq3h71sngf3rwj7k7i6j-kxmlgui-6.22.0/lib/libKF6XmlGui.so.6.22.0  /nix/store/jsclwqmq4knip5j13hycidnbn9rq8fa7-kitemviews-6.22.0/lib/libKF6ItemViews.so.6.22.0  /nix/store/zprmabrz4cyf7qvv5v0c723xx1z9yn30-kconfigwidgets-6.22.0/lib/libKF6ConfigWidgets.so.6.22.0  /nix/store/jhmkwjqw4k338sqd3vhy9jvn0rlgxpfh-knotifications-6.22.0/lib/libKF6Notifications.so.6.22.0  /nix/store/rcm6yr9jq6pkr4mk6fkxzrjkbksql1hg-ktextwidgets-6.22.0/lib/libKF6TextWidgets.so.6.22.0  /nix/store/cf867nghr4qc58p1mzkmpdc88a63hc2i-kcompletion-6.22.0/lib/libKF6Completion.so.6.22.0  /nix/store/a624801nzab070c3lmrhgd9211ad2bzv-kwidgetsaddons-6.22.0/lib/libKF6WidgetsAddons.so.6.22.0  /nix/store/bx23lmp4har5ih2xgmzyp4xmba0r5682-kcodecs-6.22.0/lib/libKF6Codecs.so.6.22.0  /nix/store/1l5y5zhlrin6njaigdj7gsrjbfp7aivx-sonnet-6.22.0/lib/libKF6SonnetUi.so.6.22.0  /nix/store/b1jfx4k12vszi6mqz09fr5lvjdffp267-kiconthemes-6.22.0/lib/libKF6IconThemes.so.6.22.0  /nix/store/5595a85mb88v5r5iasl43dx4lr6qbm0d-karchive-6.22.0/lib/libKF6Archive.so.6.22.0  /nix/store/gd79pg840zsd23krnyijs05ihlnjy9x9-kcolorscheme-6.22.0/lib/libKF6ColorScheme.so.6.22.0  /nix/store/9dr4mach1xiwkb893pcsfy9rfbfkjw5q-kguiaddons-6.22.1/lib/libKF6GuiAddons.so.6.22.1  /nix/store/d52h2d6d2z0nv8g0n54vcq7jxmvafjds-kconfig-6.22.0/lib/libKF6ConfigGui.so.6.22.0  /nix/store/492mf5cl6n94n64rvj90pf8vk6ws8dv2-solid-6.22.0/lib/libKF6Solid.so.6.22.0  /nix/store/kavwy4v9p1jhf952dzipkjj5l1hjx110-qtbase-6.10.1/lib/libQt6Xml.so.6.10.1  /nix/store/i7b0nqan89rinmmgjsfvyyxyps436in3-kfilemetadata-6.22.0/lib/libKF6FileMetaData.so.6.22.0  /nix/store/fz6l7zx5jmzr2kj24l7xw4fl4id2cp39-purpose-6.22.0/lib/libKF6PurposeWidgets.so.6.22.0  /nix/store/fz6l7zx5jmzr2kj24l7xw4fl4id2cp39-purpose-6.22.0/lib/libKF6Purpose.so.6.22.0  /nix/store/hhrlixskmic8yrv0simfsmfr6b79gfhb-kcoreaddons-6.22.0/lib/libKF6CoreAddons.so.6.22.0  /nix/store/d52h2d6d2z0nv8g0n54vcq7jxmvafjds-kconfig-6.22.0/lib/libKF6ConfigCore.so.6.22.0  /nix/store/bafh2k71bs9ls9vjzkkvpzfzilqqis8c-libglvnd-1.7.0/lib/libOpenGL.so  /nix/store/bafh2k71bs9ls9vjzkkvpzfzilqqis8c-libglvnd-1.7.0/lib/libGLX.so  /nix/store/0dzcn620b9xmr4nrmq2km2sgcaipspgj-mlt-7.34.1/lib/libmlt-7.so  /nix/store/0dzcn620b9xmr4nrmq2km2sgcaipspgj-mlt-7.34.1/lib/libmlt++-7.so  /nix/store/ain31mfk3p75gijd45mzayb7qv7qc46h-opentimelineio-0.18.1/lib/libopentimelineio.so.0.18.1  /nix/store/ain31mfk3p75gijd45mzayb7qv7qc46h-opentimelineio-0.18.1/lib/libopentime.so.0.18.1  /nix/store/b79mxhr867xfydvymd6b53nyzckmri88-imath-3.2.1/lib/libImath-3_2.so.30.3.2.1  -lm  -ldl  lib/libkiss_fft.a  /nix/store/5acpdjpddk2c11arcfvqmqq9a969mhba-ki18n-6.22.0/lib/libKF6I18nQml.so.6.22.0  /nix/store/5acpdjpddk2c11arcfvqmqq9a969mhba-ki18n-6.22.0/lib/libKF6I18n.so.6.22.0  /nix/store/pma97xn76wlzmsqj018bl3df6mywgfl7-qtdeclarative-6.10.1/lib/libQt6QuickWidgets.so.6.10.1  /nix/store/7xk68ynm8kcrgvi0lrj047cwmm8hdiqv-qtmultimedia-6.10.1/lib/libQt6MultimediaWidgets.so.6.10.1  /nix/store/7xk68ynm8kcrgvi0lrj047cwmm8hdiqv-qtmultimedia-6.10.1/lib/libQt6Multimedia.so.6.10.1  /nix/store/kavwy4v9p1jhf952dzipkjj5l1hjx110-qtbase-6.10.1/lib/libQt6Concurrent.so.6.10.1  /nix/store/q5h8fcs4m6k55d90w1801jgskz2prwsa-qtnetworkauth-6.10.1/lib/libQt6NetworkAuth.so.6.10.1  /nix/store/apkm90xsp57mhklwhj5vlysibpj3djw0-qtsvg-6.10.1/lib/libQt6SvgWidgets.so.6.10.1  /nix/store/apkm90xsp57mhklwhj5vlysibpj3djw0-qtsvg-6.10.1/lib/libQt6Svg.so.6.10.1  /nix/store/wqky82f75ckch26q8wzfxgwfsz50v3f8-KDDockWidgets-2.4.0/lib/libkddockwidgets-qt6.so.2.4.0  /nix/store/pma97xn76wlzmsqj018bl3df6mywgfl7-qtdeclarative-6.10.1/lib/libQt6QuickControls2.so.6.10.1  /nix/store/pma97xn76wlzmsqj018bl3df6mywgfl7-qtdeclarative-6.10.1/lib/libQt6Quick.so.6.10.1  /nix/store/kavwy4v9p1jhf952dzipkjj5l1hjx110-qtbase-6.10.1/lib/libQt6OpenGL.so.6.10.1  /nix/store/kavwy4v9p1jhf952dzipkjj5l1hjx110-qtbase-6.10.1/lib/libQt6Widgets.so.6.10.1  /nix/store/kavwy4v9p1jhf952dzipkjj5l1hjx110-qtbase-6.10.1/lib/libQt6Gui.so.6.10.1  /nix/store/bafh2k71bs9ls9vjzkkvpzfzilqqis8c-libglvnd-1.7.0/lib/libGLX.so  /nix/store/bafh2k71bs9ls9vjzkkvpzfzilqqis8c-libglvnd-1.7.0/lib/libOpenGL.so  /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavformat.so  /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so  /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libswresample.so  /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavutil.so  /nix/store/dnh8fgv6rc6glkd96qmrkha9gp76slif-kdbusaddons-6.22.0/lib/libKF6DBusAddons.so.6.22.0  /nix/store/kavwy4v9p1jhf952dzipkjj5l1hjx110-qtbase-6.10.1/lib/libQt6DBus.so.6.10.1  lib/libmedia_ctrl.a  /nix/store/pma97xn76wlzmsqj018bl3df6mywgfl7-qtdeclarative-6.10.1/lib/libQt6Qml.so.6.10.1  /nix/store/kavwy4v9p1jhf952dzipkjj5l1hjx110-qtbase-6.10.1/lib/libQt6Network.so.6.10.1  /nix/store/kavwy4v9p1jhf952dzipkjj5l1hjx110-qtbase-6.10.1/lib/libQt6Core.so.6.10.1 && :
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compiler_release'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_result_get_compilation_status'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compile_options_set_generate_debug_info'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compile_into_spv'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compile_options_initialize'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_result_release'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compile_options_set_target_spirv'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_result_get_bytes'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_result_get_error_message'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compile_options_set_optimization_level'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compiler_initialize'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_result_get_length'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compile_options_set_target_env'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_result_get_num_warnings'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_result_get_num_errors'
       > /nix/store/47mn80zqpygykqailwzw8zlag4cgl75q-binutils-2.44/bin/ld: /nix/store/l683pc6k7v03gsdasb24xlir77khv67x-ffmpeg-full-8.0.1-lib/lib/libavcodec.so: undefined reference to `shaderc_compile_options_release'
       > collect2: error: ld returned 1 exit status
       > ninja: build stopped: subcommand failed.
       For full logs, run:
         nix log /nix/store/4p6qrxr196zmglqn3fmkfnqknlm6xpyy-kdenlive-25.12.1.drv

Additional context

No response

System metadata

• system: "x86_64-linux"
• host os: Linux 6.12.65, NixOS, 26.05 (Yarara), 26.05.20260117.4362fac
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.31.2+2
• channels(root): "nixos-24.11"
• nixpkgs: /nix/store/qg5xwj586sd52ysfp7qaac0lys92n6iq-nixpkgs/nixpkgs

Notify maintainers

@ttuegel @FRidh @K900 @LunNova @NickCao @SCOTT-HAMILTON @SuperSandro2000 @bkchr @ilya-fedin @mjm @nyanloutre @peterhoeg

---

Note for maintainers: Please tag this issue in your pull request description. (i.e. Resolves #ISSUE.)

I assert that this issue is relevant for Nixpkgs

• I assert that this is a bug and not a support request.
• I assert that this is not a duplicate of an existing issue.
• I assert that I have read the NixOS Code of Conduct and agree to abide by it.

Is this issue important to you?

Add a 👍 reaction to issues you find important.

[ryand56]

Related to #479279, possibly #477464 (comment)?

[mio-19]

related:

error: builder for '/nix/store/nm4whxk6b2k65dan5q30l3x3dhf15qi0-ffmpeg-full-7.1.1.drv' failed with exit code 2;
       last 25 log lines:
       > CC     libavcodec/qdrw.o
       > In file included from libavcodec/tableprint_vlc.h:40,
       >                  from libavcodec/qdm2_tablegen.c:24:
       > libavcodec/vlc.c: In function 'ff_vlc_init_multi_from_lengths':
       > libavcodec/vlc.c:530:20: error: implicit declaration of function 'av_malloc'; did you mean 'av_mallocz'? [-Wimplicit-function-declaration]
       >   530 |     multi->table = av_malloc(sizeof(*multi->table) << nb_bits);
       >       |                    ^~~~~~~~~
       >       |                    av_mallocz
       > libavcodec/vlc.c:530:18: warning: assignment to 'VLC_MULTI_ELEM *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
       >   530 |     multi->table = av_malloc(sizeof(*multi->table) << nb_bits);
       >       |                  ^
       > In file included from libavcodec/qdm2_tablegen.c:26:
       > libavcodec/qdm2_tablegen.h: In function 'build_vlc':
       > libavcodec/qdm2_tablegen.h:120:30: warning: pointer targets in passing argument 4 of 'ff_vlc_init_from_lengths' differ in signedness [-Wpointer-sign]
       >   120 |                              &tab[0][1], 2, &tab[0][0], 2, 1,
       >       |                              ^~~~~~~~~~
       >       |                              |
       >       |                              const uint8_t * {aka const unsigned char *}
       > libavcodec/vlc.c:307:44: note: expected 'const int8_t *' {aka 'const signed char *'} but argument is of type 'const uint8_t *' {aka 'const unsigned char *'}
       >   307 |                              const int8_t *lens, int lens_wrap,
       >       |                              ~~~~~~~~~~~~~~^~~~
       > make: *** [ffbuild/common.mak:201: libavcodec/qdm2_tablegen.o] Error 1
       > make: *** Waiting for unfinished jobs....
       > STRIP  libavutil/x86/tx_float.o
       > skipping strip -x libavutil/x86/tx_float.o

[ryand56]

I was able to build with ffmpeg_7-full

[ayaadev]

I'm getting a similar error to what @mio-19 posted:

error: Cannot build '/nix/store/nm4whxk6b2k65dan5q30l3x3dhf15qi0-ffmpeg-full-7.1.1.drv'.
       Reason: builder failed with exit code 2.
       Output paths:
         /nix/store/...-ffmpeg-full-7.1.1-lib
         /nix/store/...-ffmpeg-full-7.1.1-bin
         /nix/store/...-ffmpeg-full-7.1.1-dev
         /nix/store/...-ffmpeg-full-7.1.1-data
         /nix/store/...-ffmpeg-full-7.1.1-man
         /nix/store/...-ffmpeg-full-7.1.1-doc
         /nix/store/...-ffmpeg-full-7.1.1
       Last 25 log lines:
       > CC      libavcodec/qoi_parser.o
       > CC      libavcodec/qoidec.o
       > CC  libavcodec/qoienc.o
       > In file included from libavcodec/tableprint_vlc.h:40,
       >                  from libavcodec/qdm2_tablegen.c:24:
       > libavcodec/vlc.c: In function 'ff_vlc_init_multi_from_lengths':
       > libavcodec/vlc.c:530:20: error: implicit declaration of function 'av_malloc'; did you mean 'av_mallocz'? [-Wimplicit-function-declaration]
       >   530 |     multi->table = av_malloc(sizeof(*multi->table) << nb_bits);
       >       |                    ^~~~~~~~~
       >       |                    av_mallocz
       > libavcodec/vlc.c:530:18: warning: assignment to 'VLC_MULTI_ELEM *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
       >   530 |     multi->table = av_malloc(sizeof(*multi->table) << nb_bits);
       >       |                  ^
       > In file included from libavcodec/qdm2_tablegen.c:26:
       > libavcodec/qdm2_tablegen.h: In function 'build_vlc':
       > libavcodec/qdm2_tablegen.h:120:30: warning: pointer targets in passing argument 4 of 'ff_vlc_init_from_lengths' differ in signedness [-Wpointer-sign]
       >   120 |                              &tab[0][1], 2, &tab[0][0], 2, 1,
       >       |                              ^~~~~~~~~~
       >       |                              |
       >       |                              const uint8_t * {aka const unsigned char *}
       > libavcodec/vlc.c:307:44: note: expected 'const int8_t *' {aka 'const signed char *'} but argument is of type 'const uint8_t *' {aka 'const unsigned char *'}
       >   307 |                              const int8_t *lens, int lens_wrap,
       >       |                              ~~~~~~~~~~~~~~^~~~
       > make: *** [ffbuild/common.mak:201: libavcodec/qdm2_tablegen.o] Error 1
       > make: *** Waiting for unfinished jobs....

[wr4ng]

Me too, same problem when trying to build handbrake, which also fails on hydra with the same error: https://hydra.nixos.org/build/319912371

[daveoconnor]

Having the same issue with build_vlc, I tried ffmpeg_7-full as a workaround and it didn't work for me.

error: Cannot build '/nix/store/nm4whxk6b2k65dan5q30l3x3dhf15qi0-ffmpeg-full-7.1.1.drv'.
       Reason: builder failed with exit code 2.
       Output paths:
         /nix/store/19vsyhcqpjknmkr4ybf9dxd9s32cdqa4-ffmpeg-full-7.1.1-lib
         /nix/store/26n6fwkvrkky7y8z41c5zfi7lw3yhq0n-ffmpeg-full-7.1.1-bin
         /nix/store/7m77lkx839q7v6lg4zjjq8bsvch0fxx3-ffmpeg-full-7.1.1-dev
         /nix/store/ckpi27c03v8xaczn8ba0sdx95qb06lbk-ffmpeg-full-7.1.1-data
         /nix/store/csx21rshzgpf1g2qgmkamsylw8a7gz41-ffmpeg-full-7.1.1-man
         /nix/store/f76phrx0x72z87g2bnhrfjk9kvmz1jd5-ffmpeg-full-7.1.1-doc
         /nix/store/x23a7fa70xgwx6vsdql8my6cwib8d104-ffmpeg-full-7.1.1
       Last 25 log lines:
       > CC      libavcodec/qoadec.o
       > CC  libavcodec/qoi_parser.o
       > In file included from libavcodec/tableprint_vlc.h:40,
       >                  from libavcodec/qdm2_tablegen.c:24:
       > libavcodec/vlc.c: In function 'ff_vlc_init_multi_from_lengths':
       > libavcodec/vlc.c:530:20: error: implicit declaration of function 'av_malloc'; did you mean 'av_mallocz'? [-Wimplicit-function-declaration]
       >   530 |     multi->table = av_malloc(sizeof(*multi->table) << nb_bits);
       >       |                    ^~~~~~~~~
       >       |                    av_mallocz
       > libavcodec/vlc.c:530:18: warning: assignment to 'VLC_MULTI_ELEM *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
       >   530 |     multi->table = av_malloc(sizeof(*multi->table) << nb_bits);
       >       |                  ^
       > In file included from libavcodec/qdm2_tablegen.c:26:
       > libavcodec/qdm2_tablegen.h: In function 'build_vlc':
       > libavcodec/qdm2_tablegen.h:120:30: warning: pointer targets in passing argument 4 of 'ff_vlc_init_from_lengths' differ in signedness [-Wpointer-sign]
       >   120 |                              &tab[0][1], 2, &tab[0][0], 2, 1,
       >       |                              ^~~~~~~~~~
       >       |                              |
       >       |                              const uint8_t * {aka const unsigned char *}
       > libavcodec/vlc.c:307:44: note: expected 'const int8_t *' {aka 'const signed char *'} but argument is of type 'const uint8_t *' {aka 'const unsigned char *'}
       >   307 |                              const int8_t *lens, int lens_wrap,
       >       |                              ~~~~~~~~~~~~~~^~~~
       > CC    libavcodec/qoidec.o
       > make: *** [ffbuild/common.mak:201: libavcodec/qdm2_tablegen.o] Error 1
       > make: *** Waiting for unfinished jobs....
       For full logs, run:
         nix log /nix/store/nm4whxk6b2k65dan5q30l3x3dhf15qi0-ffmpeg-full-7.1.1.drv

[ryand56]

I opened #484121.

[magneticflux-]

Here's a temporary workaround:

# Temporary fix, remove when https://github.com/NixOS/nixpkgs/issues/483540 is closed.
# Completely disables the `shaderc` feature that was broken by https://github.com/NixOS/nixpkgs/pull/477464.
nixpkgs.overlays = [
  (final: prev: {
    ffmpeg-full = prev.ffmpeg-full.override { withShaderc = false; };
  })
];

If you don't need shaderc support in ffmpeg, this just disables it everywhere since it seems like #477464 broke it.

[IncredibleLaser]

Another option is to override kdenlive's ffmpeg-full input since this is fixed with ffmpeg 7: kdenlive.override { ffmpeg-full = pkgs.ffmpeg_7-full; };