- ghc-devs - Haskell.org

New registration on GHC Gitlab
by divya＠subvertising.org 19 Apr '24

19 Apr '24

Hello, I am Divya looking forward to start making some little contributions to this language community. I have been using Haskell for a few years now, and it was the reason I have been in love with functional programming. I've registered a new account on the gitlab instance with the username `divya`, may I get that verified so that I can continue further? Thank you. Regards, Divya Ranjan, Mathematics, Philosophy and Libre Software.

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Crashing in testsuite driver
by Simon Peyton Jones 19 Apr '24

19 Apr '24

Dear GHC-Devs Aargh! Suddenly I can't run the testsuite on HEAD. See below. I'm on Ubuntu, and have run 'apt update; apt upgrade', so I'm up to date. This is totally stalling me. Can anyone help? Thanks! Simon hadrian/build -j15 test --skip=_build/stage0/** --skip=_build/stage1/** --docs=no-haddocks --only=T12461 Resolving dependencies... Up to date ]0;Starting... | Run Testsuite GetExtraDeps: none Command line: /usr/bin/python3 -Wdefault testsuite/driver/runtests.py --rootdir=testsuite/tests --rootdir=libraries/binary/tests --rootdir=libraries/bytestring/tests --rootdir=libraries/directory/tests --rootdir=libraries/exceptions/tests --rootdir=libraries/filepath/tests --rootdir=libraries/ghc-heap/tests --rootdir=libraries/os-string/tests --rootdir=libraries/text/tests --rootdir=libraries/array/tests --rootdir=libraries/base/tests --rootdir=libraries/deepseq/tests --rootdir=libraries/exceptions/tests --rootdir=libraries/ghc-compact/tests --rootdir=libraries/ghc-prim/tests --rootdir=libraries/haskeline/tests --rootdir=libraries/pretty/tests --rootdir=libraries/template-haskell/tests --rootdir=libraries/stm/tests --rootdir=libraries/unix/tests --top /home/simonpj/code/HEAD-23/testsuite -e windows=False -e darwin=False -e config.local=False -e config.cleanup=True -e config.accept=False -e config.accept_platform=False -e config.accept_os=False -e 'config.exeext='\'''\''' -e config.compiler_debugged=False -e config.debug_rts=False -e ghc_with_native_codegen=True -e config.have_ncg=True -e config.have_llvm=False -e config.compiler_profiled=False -e config.have_RTS_linker=True -e 'config.package_conf_cache_file="/home/simonpj/code/HEAD-23/_build/stage1/lib/package.conf.d/package.cache"' -e 'config.libdir="/home/simonpj/code/HEAD-23/_build/stage1/lib"' -e config.have_interp=True -e config.unregisterised=False -e config.tables_next_to_code=True -e 'ghc_compiler_always_flags='\'' -dcore-lint -dstg-lint -dcmm-lint -no-user-package-db -fno-dump-with-ways -fprint-error-index-links=never -rtsopts -fno-warn-missed-specialisations -fshow-warning-groups -fdiagnostics-color=never -fno-diagnostics-show-caret -Werror=compat -dno-debug-output'\''' -e ghc_with_dynamic_rts=True -e config.ghc_with_threaded_rts=True -e config.have_fast_bignum=True -e target_with_smp=True -e config.ghc_dynamic=True -e config.leading_underscore=False -e 'config.wordsize="64"' -e 'config.os="linux"' -e 'config.arch="x86_64"' -e 'config.platform="x86_64-unknown-linux"' -e config.stage=2 --config gs=gs --config 'timeout_prog="/home/simonpj/code/HEAD-23/_build/testsuite/timeout/install-inplace/bin/timeout"' --config stats_files_dir=_build/stage1/haddock-timing-files --threads=15 --config-file=testsuite/config/ghc --only=T12461 -e config.speed=1 --summary-file=testsuite_summary.txt --verbose=2 --config 'compiler="/home/simonpj/code/HEAD-23/_build/stage1/bin/ghc"' --config 'ghc_pkg="/home/simonpj/code/HEAD-23/_build/stage1/bin/ghc-pkg"' --config haddock= --config 'hp2ps="/home/simonpj/code/HEAD-23/_build/stage1/bin/hp2ps"' --config 'hpc="/home/simonpj/code/HEAD-23/_build/stage1/bin/hpc"' -e config.in_tree_compiler=True --only-report-hadrian-deps /tmp/extra-file-60780399662884-22612-0 ===> Command failed with error code: 1 /usr/lib/python3/dist-packages/apport/report.py:13: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses import fnmatch, glob, traceback, errno, sys, atexit, imp, stat Traceback (most recent call last): File "testsuite/driver/runtests.py", line 470, in <module> framework_fail(name, None, 'test not found') File "/home/simonpj/code/HEAD-23/testsuite/driver/testlib.py", line 1537, in framework_fail directory = re.sub(r'^\.[/\\]', '', str(opts.testdir)) File "/home/simonpj/code/HEAD-23/testsuite/driver/testglobals.py", line 467, in testdir raise Exception('testdir not initialized') Exception: testdir not initialized Timeout is 300 Known ways: hpc, prof, normal_h, prof_hc_hb, prof_hb, prof_hd, prof_hy, prof_hr, sanity, threaded1_ls, threaded2_hT, threaded2_sanity, debug_numa, llvm, debugllvm, profllvm, profoptllvm, profthreadedllvm, debug, ghci-ext, ghci-ext-prof, ext-interp, nonmoving, nonmoving_thr, nonmoving_thr_sanity, nonmoving_thr_ghc, compacting_gc Run ways: normal, optasm, ghci, ghci-opt, threaded1, threaded2, dyn, hpc Compile ways: normal, optasm, hpc Allowing performance changes in: Found 591 .T files... Beginning test run at Fri Apr 19 11:47:08 2024 Detected CPU features: {'flags', 'fma', 'mmx', 'smap', 'sse4_2', 'abm', 'sep', 'tsc_reliable', 'syscall', 'ssbd', 'hypervisor', 'rdtscp', 'sse4_1', 'ssse3', 'extd_apicid', 'ibpb', 'avx', 'sse', 'constant_tsc', 'cpuid', 'avx2', 'fxsr_opt', 'rdrand', 'nonstop_tsc', 'cmov', 'osvw', 'rep_good', 'misalignsse', 'pat', 'ht', 'mmxext', 'mca', 'lahf_lm', 'pae', 'fsgsbase', 'f16c', 'pclmulqdq', 'clwb', 'mtrr', 'popcnt', 'aes', 'topoext', 'sse4a', 'vme', 'clflush', 'cr8_legacy', 'de', 'xsaveerptr', 'fxsr', 'cx16', 'arat', 'movbe', 'sse3', 'nx', 'apic', '3dnowprefetch', 'rdseed', 'sha_ni', 'msr', 'lm', 'pge', 'mce', 'sse2', 'xsave', 'bmi2', 'clzero', 'vmmcall', 'cmp_legacy', 'tsc', 'clflushopt', 'umip', ':', 'fpu', 'virt_ssbd', 'bmi1', 'xsavec', 'pdpe1gb', 'stibp', 'xgetbv1', 'pse36', 'nopl', 'adx', 'cx8', 'pse', 'smep', 'xsaveopt', 'rdpid'} Found CPU features: flags fma mmx smap sse4_2 abm sep tsc_reliable syscall ssbd hypervisor rdtscp sse4_1 ssse3 extd_apicid ibpb avx sse constant_tsc cpuid avx2 fxsr_opt rdrand nonstop_tsc cmov osvw rep_good misalignsse pat ht mmxext mca lahf_lm pae fsgsbase f16c pclmulqdq clwb mtrr popcnt aes topoext sse4a vme clflush cr8_legacy de xsaveerptr fxsr cx16 arat movbe sse3 nx apic 3dnowprefetch rdseed sha_ni msr lm pge mce sse2 xsave bmi2 clzero vmmcall cmp_legacy tsc clflushopt umip : fpu virt_ssbd bmi1 xsavec pdpe1gb stibp xgetbv1 pse36 nopl adx cx8 pse smep xsaveopt rdpid ]0;Finished in 1.70s Command failed Build failed. make: *** [/home/simonpj/code/Makefile-spj:35: tests-only] Error 1 simonpj@LHR-WD-22561:~/code/HEAD-23$

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[ANNOUNCE] GHC 9.6.5 is now available
by Zubin Duggal 16 Apr '24

16 Apr '24

The GHC developers are happy to announce the availability of GHC 9.6.5. Binary distributions, source distributions, and documentation are available on the [release page](https://www.haskell.org/ghc/download_ghc_9_6_5.html). GHC Blog Post: https://www.haskell.org/ghc/blog/20240416-ghc-9.6.5-released.html This release is primarily a bugfix release addressing some issues found in the 9.6 series. These include: * Bumping the bundled `process` library to 1.6.19.0 to avoid a potential [command injection vulnerability] on Windows for clients of this library. This isn't known to affect GHC itself, but allows users who depend on the installed version of the `process` to avoid the issue. * Fixing a bug resulting in the distributed ``hsc2hs`` wrapper using flags from the compiler build environment (#24050). * Disabling the `-fasm-shortcutting` optimisation with `-O2` as it is known to result in unsoundess and incorrect runtime results in some cases (#24507). * Ensuring we take ``LDFLAGS`` into account when configuring a linker (#24565). * Fixing a bug arising from incorrect parsing of paths containing spaces in the settings file (#24265). * And many more fixes A full accounting of changes can be found in the [release notes]. As some of the fixed issues do affect correctness users are encouraged to upgrade promptly. We would like to thank Microsoft Azure, GitHub, IOG, the Zw3rk stake pool, Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, Haskell Foundation, and other anonymous contributors whose on-going financial and in-kind support has facilitated GHC maintenance and release management over the years. Finally, this release would not have been possible without the hundreds of open-source contributors whose work comprise this release. As always, do give this release a try and open a [ticket][] if you see anything amiss. Enjoy! -Zubin [ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new [release notes]: https://downloads.haskell.org/~ghc/9.6.5/docs/users_guide/9.6.5-notes.html [command injection vulnerability]: https://github.com/haskell/security-advisories/blob/main/advisories/hackage…

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[ANNOUNCE] GHC 9.10.1-alpha3 is now available
by Ben Gamari 15 Apr '24

15 Apr '24

The GHC developers are very pleased to announce the availability of the third alpha release of GHC 9.10.1. Binary distributions, source distributions, and documentation are available at https://downloads.haskell.org/ghc/9.10.1-alpha3 We hope to have this release available via ghcup shortly. GHC 9.10 will bring a number of new features and improvements, including: * The introduction of the `GHC2024` language edition, building upon `GHC2021` with the addition of a number of widely-used extensions. * Partial implementation of the [GHC Proposal #281], allowing visible quantification to be used in the types of terms. * [Extension] of LinearTypes to allow linear `let` and `where` bindings ([linear let]) * The implementation of the [exception backtrace proposal], allowing the annotation of exceptions with backtraces, as well as other user-defined context * Further improvements in the info table provenance mechanism, reducing code size to allow IPE information to be enabled more widely * Javascript FFI support in the WebAssembly backend * Improvements in the fragmentation characteristics of the low-latency non-moving garbage collector. * ... and many more A full accounting of changes can be found in the [release notes]. As always, GHC's release status, including planned future releases, can be found on the GHC Wiki [status]. This alpha is the penultimate prerelease leading to 9.10.1. In two weeks we plan to publish a release candidate, followed, if all things go well, by the final release a week later. We would like to thank GitHub, IOG, the Zw3rk stake pool, Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, the Haskell Foundation, and other anonymous contributors whose on-going financial and in-kind support has facilitated GHC maintenance and release management over the years. Finally, this release would not have been possible without the hundreds of open-source contributors whose work comprise this release. As always, do give this release a try and open a [ticket] if you see anything amiss. Cheers, ~ Ben [release notes]: https://downloads.haskell.org/ghc/9.10.1-alpha3/docs/users_guide/9.10.1-not… [status]: https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-status [exception backtrace]: https://github.com/ghc-proposals/ghc-proposals/pull/330 [GHC Proposal #281]: https://github.com/ghc-proposals/ghc-proposals/pull/281 [linear let]: https://github.com/ghc-proposals/ghc-proposals/pull/624 [ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new

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Request for approval of my GHC GitLab Account
by Hiroki Tokunaga 10 Apr '24

10 Apr '24

Dear GHC administrators, I am Hiroki Tokunaga, and I am interested in joining the development of GHC and other Haskell tools. For this, I would like to get your approval for my GitLab account (username: HirokiTokunaga). Thank you for reading this e-mail. I look forward to your response. Sincerely, Hiroki Tokunaga

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Request for Approval of GHC GitLab Account
by chenxi li 07 Apr '24

07 Apr '24

Dear GHC Administrators, My name is Chenxi Li and I am interested in contributing to the GHC project. I have read through the contributing guidelines and am looking forward to joining the GHC community. My GHC GitLab username is *ayanamists(a)gmail.com <ayanamists(a)gmail.com>*. Due to the platform's anti-spam policy, I require your approval to begin contributing. Thank you for your time and consideration. I look forward to your response. Best regards, Chenxi Li

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Missing dependencies
by Simon Peyton Jones 03 Apr '24

03 Apr '24

Friends My work has stalled because of https://gitlab.haskell.org/ghc/ghc/-/issues/24436 E.g. see https://gitlab.haskell.org/ghc/ghc/-/merge_requests/11492 which fails to build. Does anyone know a good workaround? Thanks! Simon

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GitLab Account Approval
by Matthew Wraith 31 Mar '24

31 Mar '24

Hi everyone, I’ve requested to join the gitlab instance with username wraithm Thanks!

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[ANNOUNCE] GHC 9.10.1-alpha2 is now available
by Ben Gamari 29 Mar '24

29 Mar '24

The GHC developers are very pleased to announce the availability of the second alpha release of GHC 9.10.1. Binary distributions, source distributions, and documentation are available at https://downloads.haskell.org/ghc/9.10.1-alpha2 We hope to have this release available via ghcup shortly. GHC 9.10 will bring a number of new features and improvements, including: * The introduction of the `GHC2024` language edition, building upon `GHC2021` with the addition of a number of widely-used extensions. * Partial implementation of the [GHC Proposal #281], allowing visible quantification to be used in the types of terms. * [Extension] of LinearTypes to allow linear `let` and `where` bindings ([linear let]) * The implementation of the [exception backtrace proposal], allowing the annotation of exceptions with backtraces, as well as other user-defined context * Further improvements in the info table provenance mechanism, reducing code size to allow IPE information to be enabled more widely * Javascript FFI support in the WebAssembly backend * Improvements in the fragmentation characteristics of the low-latency non-moving garbage collector. * ... and many more A full accounting of changes can be found in the [release notes]. As always, GHC's release status, including planned future releases, can be found on the GHC Wiki [status]. We would like to thank GitHub, IOG, the Zw3rk stake pool, Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, the Haskell Foundation, and other anonymous contributors whose on-going financial and in-kind support has facilitated GHC maintenance and release management over the years. Finally, this release would not have been possible without the hundreds of open-source contributors whose work comprise this release. As always, do give this release a try and open a [ticket] if you see anything amiss. [release notes]: https://downloads.haskell.org/ghc/9.10.1-alpha2/docs/users_guide/9.10.1-not… [status]: https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-status [exception backtrace]: https://github.com/ghc-proposals/ghc-proposals/pull/330 [GHC Proposal #281]: https://github.com/ghc-proposals/ghc-proposals/pull/281 [linear let]: https://github.com/ghc-proposals/ghc-proposals/pull/624 [ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new

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GitLab planned outage
by Ben Gamari 25 Mar '24

25 Mar '24

Hi all, On Wednesday evening EST I will bring down gitlab.haskell.org for some scheduled maintenance. I expect that the outage will likely start at 19:00 EST and last for up to two hours. Cheers, - Ben

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