Build fails with gdc 13.x

[ximion]

System information

• dub version: 1.30 & master
• OS Platform and distribution: Linux (Debian)
• compiler version gdc 12.2.0

Bug Description

When trying to compile dub using GDC, the build fails while the previous 1.29 version built fine.
Error message:

Command `["gdmd", "-of/tmp/dub/bin/dub", "-I/tmp/dub/source", "-version=DubUseCurl", "-version=DubApplication", "-g", "-O", "-w", "@build-files.txt"]` failed, output was:
Serializing composite type Flags!(BuildRequirement) which has no serializable fields
Serializing composite type Flags!(BuildOption) which has no serializable fields
source/dub/internal/dyaml/stdsumtype.d:2053:13: error: static assert:  "`handlers[0]` of type `template` never matches"
 2053 |             static assert(matches[].canFind(hid),
      |             ^
source/dub/internal/dyaml/stdsumtype.d:1717:52: note: instantiated from here: ‘matchImpl!(const(SumType!(NativePath, Version)))’
 1717 |         return matchImpl!(Yes.exhaustive, handlers)(args);
      |                                                    ^
source/dub/commandline.d:2319:43: note: instantiated from here: ‘match!(const(SumType!(NativePath, Version)))’
 2319 |                                 ovr.target.match!(
      |                                           ^

How to reproduce?

Try to build dub using gdc

Expected Behavior

Either the build succeeds as it did before, or dub emits a message that the compiler/version is unsupported for building dub.

[WebFreak001]

#2548 for WIP changes, but was needing a GDC update.

Your error message looks like the match there doesn't use const properly.

[ibuclaw]

Bad commit 8a25429

[ximion]

If there was a (even temporary) fix available soonish, we could still get dub 1.30 into the next Debian release. Otherwise this will need a freeze exception, and even though it's a low popularity package, it technically also is a toolchain package which means it's not guaranteed to get that exception (switching to LDC would mean loosing architecture support, which comes with its own administrative issues).

[WebFreak001]

building master seems to work on my machine with gdc (GCC) 12.2.1 20230111

[ximion]

It fails here with the same error, using gdc (Debian 12.2.0-14) 12.2.0 - did the .1 patch release change anything maybe?

[ibuclaw]

building master seems to work on my machine with gdc (GCC) 12.2.1 20230111

You need to build with -Werror to see the message.

[WebFreak001]

invocation:

gdc -o /home/webfreak/.dub/cache/dub/1.27.0+commit.469.g06347027/build/application-debug-linux.posix-x86_64-gdc_v12.2.1-BF7153F2B14FBD99D3D27B7E78C530C9EBE7EF34F2463B70B875A011BEDBF6BE/dub -fdebug -g -Werror -Wall -fversion=DubUseCurl -fversion=DubApplication -fversion=Have_dub -Isource/ source/app.d source/dub/commandline.d source/dub/compilers/buildsettings.d source/dub/compilers/compiler.d source/dub/compilers/dmd.d source/dub/compilers/gdc.d source/dub/compilers/ldc.d source/dub/compilers/utils.d source/dub/data/settings.d source/dub/dependency.d source/dub/dependencyresolver.d source/dub/description.d source/dub/dub.d source/dub/generators/build.d source/dub/generators/cmake.d source/dub/generators/generator.d source/dub/generators/sublimetext.d source/dub/generators/targetdescription.d source/dub/generators/visuald.d source/dub/init.d source/dub/internal/colorize/colors.d source/dub/internal/colorize/cwrite.d source/dub/internal/colorize/package.d source/dub/internal/colorize/winterm.d source/dub/internal/configy/Attributes.d source/dub/internal/configy/DubTest.d source/dub/internal/configy/Exceptions.d source/dub/internal/configy/FieldRef.d source/dub/internal/configy/Read.d source/dub/internal/configy/Test.d source/dub/internal/configy/Utils.d source/dub/internal/dyaml/composer.d source/dub/internal/dyaml/constructor.d source/dub/internal/dyaml/dumper.d source/dub/internal/dyaml/emitter.d source/dub/internal/dyaml/encoding.d source/dub/internal/dyaml/escapes.d source/dub/internal/dyaml/event.d source/dub/internal/dyaml/exception.d source/dub/internal/dyaml/linebreak.d source/dub/internal/dyaml/loader.d source/dub/internal/dyaml/node.d source/dub/internal/dyaml/package.d source/dub/internal/dyaml/parser.d source/dub/internal/dyaml/queue.d source/dub/internal/dyaml/reader.d source/dub/internal/dyaml/representer.d source/dub/internal/dyaml/resolver.d source/dub/internal/dyaml/scanner.d source/dub/internal/dyaml/serializer.d source/dub/internal/dyaml/stdsumtype.d source/dub/internal/dyaml/style.d source/dub/internal/dyaml/tagdirective.d source/dub/internal/dyaml/token.d source/dub/internal/git.d source/dub/internal/libInputVisitor.d source/dub/internal/logging.d source/dub/internal/sdlang/ast.d source/dub/internal/sdlang/exception.d source/dub/internal/sdlang/lexer.d source/dub/internal/sdlang/package.d source/dub/internal/sdlang/parser.d source/dub/internal/sdlang/symbol.d source/dub/internal/sdlang/token.d source/dub/internal/sdlang/util.d source/dub/internal/tinyendian.d source/dub/internal/undead/xml.d source/dub/internal/utils.d source/dub/internal/vibecompat/core/file.d source/dub/internal/vibecompat/data/json.d source/dub/internal/vibecompat/data/serialization.d source/dub/internal/vibecompat/data/utils.d source/dub/internal/vibecompat/inet/path.d source/dub/internal/vibecompat/inet/url.d source/dub/package_.d source/dub/packagemanager.d source/dub/packagesupplier.d source/dub/packagesuppliers/fallback.d source/dub/packagesuppliers/filesystem.d source/dub/packagesuppliers/maven.d source/dub/packagesuppliers/package.d source/dub/packagesuppliers/packagesupplier.d source/dub/packagesuppliers/registry.d source/dub/platform.d source/dub/project.d source/dub/recipe/io.d source/dub/recipe/json.d source/dub/recipe/packagerecipe.d source/dub/recipe/sdl.d source/dub/recipe/selection.d source/dub/semver.d source/dub/version_.d

[ximion]

building master seems to work on my machine with gdc (GCC) 12.2.1 20230111

You need to build with -Werror to see the message.

Indeed! Removing the -w compile flag "fixes" this error.

[WebFreak001]

on alpine with GDC 12.2.1 the build seems to "work", but gets a linker error at the end:

https://github.com/dlang/dub/actions/runs/4068606217/jobs/7007362399

[ximion]

invocation:

gdc -o /home/webfreak/.dub/cache/dub/1.27.0+commit.469.g06347027/build/application-debug-linux.posix-x86_64-gdc_v12.2.1-BF7153F2B14FBD99D3D27B7E78C530C9EBE7EF34F2463B70B875A011BEDBF6BE/dub -fdebug -g -Werror -Wall -fversion=DubUseCurl -fversion=DubApplication -fversion=Have_dub -Isource/ source/app.d source/dub/commandline.d source/dub/compilers/buildsettings.d source/dub/compilers/compiler.d source/dub/compilers/dmd.d source/dub/compilers/gdc.d source/dub/compilers/ldc.d source/dub/compilers/utils.d source/dub/data/settings.d source/dub/dependency.d source/dub/dependencyresolver.d source/dub/description.d source/dub/dub.d source/dub/generators/build.d source/dub/generators/cmake.d source/dub/generators/generator.d source/dub/generators/sublimetext.d source/dub/generators/targetdescription.d source/dub/generators/visuald.d source/dub/init.d source/dub/internal/colorize/colors.d source/dub/internal/colorize/cwrite.d source/dub/internal/colorize/package.d source/dub/internal/colorize/winterm.d source/dub/internal/configy/Attributes.d source/dub/internal/configy/DubTest.d source/dub/internal/configy/Exceptions.d source/dub/internal/configy/FieldRef.d source/dub/internal/configy/Read.d source/dub/internal/configy/Test.d source/dub/internal/configy/Utils.d source/dub/internal/dyaml/composer.d source/dub/internal/dyaml/constructor.d source/dub/internal/dyaml/dumper.d source/dub/internal/dyaml/emitter.d source/dub/internal/dyaml/encoding.d source/dub/internal/dyaml/escapes.d source/dub/internal/dyaml/event.d source/dub/internal/dyaml/exception.d source/dub/internal/dyaml/linebreak.d source/dub/internal/dyaml/loader.d source/dub/internal/dyaml/node.d source/dub/internal/dyaml/package.d source/dub/internal/dyaml/parser.d source/dub/internal/dyaml/queue.d source/dub/internal/dyaml/reader.d source/dub/internal/dyaml/representer.d source/dub/internal/dyaml/resolver.d source/dub/internal/dyaml/scanner.d source/dub/internal/dyaml/serializer.d source/dub/internal/dyaml/stdsumtype.d source/dub/internal/dyaml/style.d source/dub/internal/dyaml/tagdirective.d source/dub/internal/dyaml/token.d source/dub/internal/git.d source/dub/internal/libInputVisitor.d source/dub/internal/logging.d source/dub/internal/sdlang/ast.d source/dub/internal/sdlang/exception.d source/dub/internal/sdlang/lexer.d source/dub/internal/sdlang/package.d source/dub/internal/sdlang/parser.d source/dub/internal/sdlang/symbol.d source/dub/internal/sdlang/token.d source/dub/internal/sdlang/util.d source/dub/internal/tinyendian.d source/dub/internal/undead/xml.d source/dub/internal/utils.d source/dub/internal/vibecompat/core/file.d source/dub/internal/vibecompat/data/json.d source/dub/internal/vibecompat/data/serialization.d source/dub/internal/vibecompat/data/utils.d source/dub/internal/vibecompat/inet/path.d source/dub/internal/vibecompat/inet/url.d source/dub/package_.d source/dub/packagemanager.d source/dub/packagesupplier.d source/dub/packagesuppliers/fallback.d source/dub/packagesuppliers/filesystem.d source/dub/packagesuppliers/maven.d source/dub/packagesuppliers/package.d source/dub/packagesuppliers/packagesupplier.d source/dub/packagesuppliers/registry.d source/dub/platform.d source/dub/project.d source/dub/recipe/io.d source/dub/recipe/json.d source/dub/recipe/packagerecipe.d source/dub/recipe/sdl.d source/dub/recipe/selection.d source/dub/semver.d source/dub/version_.d

Ah! I was building dub using the build.d script - after removing -w, it builds and links fine.

[WebFreak001]

ah I got the invocation from dub build --compiler=gdc -v

[ximion]

Weird that linking fails on Alpine, but Alpine also is a quite different environment compared to traditional GNU/Linux...
At Debian we prefer using the build.d script so we don't have a recursive dependency on the older version of dub and bootstrapping is easier (also, dub is a pain to use in packaging, but it's getting better! Which is why 1.30 would be neat to have in Debian 12)

[ximion]

@WebFreak001

on alpine with GDC 12.2.1 the build seems to "work", but gets a linker error at the end

Well, I have to correct myself saying that this works on Debian... Dub itself links fine, but dub compiling another program then fails:

make[1]: Entering directory '/srv/build/dub-1.30.0'
gdmd -run /srv/build/dub-1.30.0/build.d \
        -g -O -wi -release
Wrote version_.d` file with version: 1.30.0-1
Building dub using gdmd (dflags: ["-g", "-O", "-wi", "-release", "-frelease"]), this may take a while...
DUB has been built as: /srv/build/dub-1.30.0/bin/dub
You may want to run `sudo ln -s /srv/build/dub-1.30.0/bin/dub /usr/local/bin` now
# create manual pages
cd /srv/build/dub-1.30.0/bin/ && ./dub /srv/build/dub-1.30.0/scripts/man/gen_man.d
Serializing composite type Flags!(BuildRequirement) which has no serializable fields
Serializing composite type Flags!(BuildOption) which has no serializable fields
/usr/bin/ld: /tmp/ccmwKCWi.o: in function `_D3std6format8internal5write__T8getWidthTAyaZQoFNaNfQlZl':
gen_man.d:(.text+0x6d76): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAyaZQoFQhZ9__lambda2Z__TQCpTQBcZQCxMFNaNfQBpZb'
/usr/bin/ld: /tmp/ccmwKCWi.o: in function `_D3std6format8internal5write__T8getWidthTAaZQnFNaNfQkZl':
gen_man.d:(.text+0x72ed): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAaZQnFQgZ9__lambda2Z__TQCoTQBbZQCwMFNaNfQBoZb'
/usr/bin/ld: /tmp/ccmwKCWi.o: in function `_D3std6format8internal5write__T8getWidthTAwZQnFNaNbNiNfQoZl':
gen_man.d:(.text+0x74e0): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAwZQnFQgZ9__lambda2Z__TQCoTQBbZQCwMFNaNbNiNfQBsZb'
/usr/bin/ld: /tmp/.dub/build/dub-~master/library-$DFLAGS-linux.posix-x86_64-gdc_v12.2.0-14391039E1E7EBE8123AD291C9AC30F7763605C96DA5F891D0EE281DA46E40CD/libdub.a: in function `_D3std6format8internal5write__T15formatValueImplTSQBw5array__T8AppenderTAyaZQoTeTaZQCaFNaNfKQBrxeMKxSQDvQDu4spec__T10FormatSpecTaZQpZv':
Attributes.d:(.text+0x9536c): undefined reference to `_D3std6format8internal5write__T15formatValueImplTSQBw5array__T8AppenderTAyaZQoTeTaZQCaFKQBnxeMKxSQDrQDq4spec__T10FormatSpecTaZQpZ__T9__lambda6TeZQnFNaNbNiNeKeZAxa'
collect2: error: ld returned 1 exit status
Error gdc failed with exit code 1.

Flags used:

LDFLAGS='-Wl,-z,relro'
DFLAGS='-frelease'

CFLAGS='-g -O2 -ffile-prefix-map=/srv/build/dub-1.30.0=. -fstack-protector-strong -Wformat -Werror=format-security'

[ximion]

Trying to use dub 1.31 to build the manual pages yields even more linker errors:

cd /srv/build/dub-1.31.0/bin/ && ./dub /srv/build/dub-1.31.0/scripts/man/gen_man.d

Serializing composite type Flags!(BuildRequirement) which has no serializable fields
Serializing composite type Flags!(BuildOption) which has no serializable fields
/usr/bin/ld: /tmp/ccncQhRw.o: in function `_D3std6format8internal5write__T8getWidthTAyaZQoFNaNfQlZl':
gen_man.d:(.text+0x6d76): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAyaZQoFQhZ9__lambda2Z__TQCpTQBcZQCxMFNaNfQBpZb'
/usr/bin/ld: /tmp/ccncQhRw.o: in function `_D3std6format8internal5write__T8getWidthTAaZQnFNaNfQkZl':
gen_man.d:(.text+0x72ed): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAaZQnFQgZ9__lambda2Z__TQCoTQBbZQCwMFNaNfQBoZb'
/usr/bin/ld: /tmp/ccncQhRw.o: in function `_D3std6format8internal5write__T8getWidthTAwZQnFNaNbNiNfQoZl':
gen_man.d:(.text+0x74e0): undefined reference to `_D3std9algorithm9searching__T3allSQBg6format8internal5write__T8getWidthTAwZQnFQgZ9__lambda2Z__TQCoTQBbZQCwMFNaNbNiNfQBsZb'
/usr/bin/ld: /tmp/.dub/build/dub-~master/library-$DFLAGS-linux.posix-x86_64-gdc_v12.2.0-EF73A06517126EA137612C896E3528F5C82DA77AA2D4C1F06844C8F055492695/libdub.a: in function `_D3std6format8internal5write__T15formatValueImplTSQBw5array__T8AppenderTAyaZQoTeTaZQCaFNaNfKQBrxeMKxSQDvQDu4spec__T10FormatSpecTaZQpZv':
commandline.d:(.text+0x83d66): undefined reference to `_D3std6format8internal5write__T15formatValueImplTSQBw5array__T8AppenderTAyaZQoTeTaZQCaFKQBnxeMKxSQDrQDq4spec__T10FormatSpecTaZQpZ__T9__lambda6TeZQnFNaNbNiNeKeZAxa'
/usr/bin/ld: /tmp/.dub/build/dub-~master/library-$DFLAGS-linux.posix-x86_64-gdc_v12.2.0-EF73A06517126EA137612C896E3528F5C82DA77AA2D4C1F06844C8F055492695/libdub.a: in function `_D3std9algorithm10comparison__T8mismatchSQBn4path__T14asRelativePathVEQCqQBd13CaseSensitivei1TAyaTQeZQBxFQlQnZ9__lambda6TSQEqQDd__T12pathSplitterTQCaZQtFQChZ12PathSplitterTQBzZQFpMFNaNbNiNfQCqQCtZSQHn8typecons__T5TupleTQDuTQDyZQp':
commandline.d:(.text+0x2a6289): undefined reference to `_D3std4path__T14asRelativePathVEQBeQBd13CaseSensitivei1TAyaTQeZQBxFQlQnZ__T9__lambda6TQBeTQBiZQtFNaNbNiNfQBxQCaZb'
/usr/bin/ld: /tmp/.dub/build/dub-~master/library-$DFLAGS-linux.posix-x86_64-gdc_v12.2.0-EF73A06517126EA137612C896E3528F5C82DA77AA2D4C1F06844C8F055492695/libdub.a: in function `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv__T11actOnChosenSQRcQRb__TQQyTQQnTQOsZQRk5emptyMFNdZ9__lambda1ZQCiFNaNbNiNfKSQTkQTj__TQTgTQSvTQRaZQTsZb':
commandline.d:(.text+0x2ae6cc): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv5emptyMFNdZ__T9__lambda1TQQiZQpFNaNbNiNfQQxZb'
/usr/bin/ld: commandline.d:(.text+0x2ae715): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv5emptyMFNdZ__T9__lambda1TQOjZQpFNaNbNiNfQOyZb'
/usr/bin/ld: /tmp/.dub/build/dub-~master/library-$DFLAGS-linux.posix-x86_64-gdc_v12.2.0-EF73A06517126EA137612C896E3528F5C82DA77AA2D4C1F06844C8F055492695/libdub.a: in function `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv__T11actOnChosenSQRcQRb__TQQyTQQnTQOsZQRk8popFrontMFZ9__lambda1ZQCjFNaNfKSQThQTg__TQTdTQSsTQQxZQTpZv':
commandline.d:(.text+0x2ae808): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv8popFrontMFZ__T9__lambda1TQQjZQpFNaNbNiNfKQQzZv'
/usr/bin/ld: commandline.d:(.text+0x2ae823): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv8popFrontMFZ__T9__lambda1TQOkZQpFNaNfKQOwZv'
/usr/bin/ld: /tmp/.dub/build/dub-~master/library-$DFLAGS-linux.posix-x86_64-gdc_v12.2.0-EF73A06517126EA137612C896E3528F5C82DA77AA2D4C1F06844C8F055492695/libdub.a: in function `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv__T11actOnChosenSQRcQRb__TQQyTQQnTQOsZQRk9moveFrontMFZ9__lambda1ZQCkFNaNfKSQTiQTh__TQTeTQStTQQyZQTqZya':
commandline.d:(.text+0x2aea9d): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv9moveFrontMFZ__T9__lambda1TQQkZQpFNaNbNiNfKQRaZya'
/usr/bin/ld: commandline.d:(.text+0x2aeab8): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv9moveFrontMFZ__T9__lambda1TQOlZQpFNaNfKQOxZxa'
/usr/bin/ld: /tmp/.dub/build/dub-~master/library-$DFLAGS-linux.posix-x86_64-gdc_v12.2.0-EF73A06517126EA137612C896E3528F5C82DA77AA2D4C1F06844C8F055492695/libdub.a: in function `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv__T11actOnChosenSQRcQRb__TQQyTQQnTQOsZQRk7popBackMFZ9__lambda1ZQCiFNaNfKSQTgQTf__TQTcTQSrTQQwZQToZv':
commandline.d:(.text+0x2aeb92): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv7popBackMFZ__T9__lambda1TQQiZQpFNaNbNiNfKQQyZv'
/usr/bin/ld: commandline.d:(.text+0x2aebad): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv7popBackMFZ__T9__lambda1TQOjZQpFNaNfKQOvZv'
/usr/bin/ld: /tmp/.dub/build/dub-~master/library-$DFLAGS-linux.posix-x86_64-gdc_v12.2.0-EF73A06517126EA137612C896E3528F5C82DA77AA2D4C1F06844C8F055492695/libdub.a: in function `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv__T11actOnChosenSQRcQRb__TQQyTQQnTQOsZQRk8moveBackMFZ9__lambda1ZQCjFNaNfKSQThQTg__TQTdTQSsTQQxZQTpZya':
commandline.d:(.text+0x2aec0b): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv8moveBackMFZ__T9__lambda1TQQjZQpFNaNbNiNfKQQzZya'
/usr/bin/ld: commandline.d:(.text+0x2aec26): undefined reference to `_D3std5range__T12ChooseResultTSQBd3utf__T10byCodeUnitTAyaZQrFQhZ14ByCodeUnitImplTSQDcQDb__T5chainTSQDt9algorithm9iteration__T6joinerTSQFcQFb__T4TakeTSQFsQFr__T6RepeatTQFhZQmZQBfTQFsZQCfFQCbQGdZ6ResultTQGpTSQHwQGt__T5byUTFTaVEQIp8typecons__T4FlagVQHka19_7573655265706c6163656d656e744463686172ZQCai1Z__TQDiTSQLsQHzQHs__TQHlTSQMj4path__T12pathSplitterTQLjZQtFQLqZ12PathSplitterTQNhZQJuFQCjQNsZQHpZQGxFNcQDrZQIdZQMfFQMcQOvQIfZQIvZQPv8moveBackMFZ__T9__lambda1TQOkZQpFNaNfKQOwZxa'
collect2: error: ld returned 1 exit status
Error gdc failed with exit code 1.

[ibuclaw]

That's not good at all - I'll see if missing references can be boiled down to something palatable, but no guarantees on time.

Will try reducing that dub -Werror in the meantime.