如何解决很多破碎的haskell软件包
（Arch linux）最近，haskell软件包遇到很多问题。通常，我可以通过更新某些软件包来轻松修复它们，但是可能是导致所有我无法弄清的根本原因。我目前认为，最可能的解释是我在haskell安装过程中的某个地方出错了，因为我没有使用“ haskell平台”，而是在需要它们时从各处随意安装了软件包。我刚刚进行了系统升级，现在运行startx时，结果为this。实际上，它所引用的共享对象文件libHSxmonad-contrib-0.16-AAxGT3H9yrS67i4YFgpjoh-ghc8.10.1.so并不存在，但是有两个以libHSxmonad-contrib结尾的ghc8.0.2共享对象文件（这是我的ghc —-version）确实存在。另外，我记得大多数时候说的大多数软件包都不见了（有些是通过cabal，有些是pacman）。如果有帮助，请查看我的cabal list —-installed，ghc-pkg check和pacman -Q|grep haskell。
解决方法
[Arch Linux] 我不确定这是否相关，但最近我对无休止的 Haskell 包更新的反复频率越来越恼火——在我的情况下，几乎完全由我的 pandoc 安装触发。
分辨率
yay -Syu ## system update; alt: sudo -Syu
sudo pacman -R pandoc ## uninstall pandoc
## ----------------------------------------
## Repeated cycles (~5-6) of the following,until nothing shown:
sudo pacman -Qdt ## list all packages no longer required
## as dependencies (orphans) ...
sudo pacman -R $(pacman -Qdtq) ## ... and delete them
## ----------------------------------------
yay -Syu ## system update; alt: sudo -Syu
示例输出
[victoria@victoria 2.0]$ sudo pacman -R $(pacman -Qdtq)
checking dependencies...
Packages (88) asar-3.0.3-1 crypto++-8.2.0-3 dep-0.5.4-5 devilspie-0.23-4 extra-cmake-modules-5.77.0-1 fuseiso-20070708-8 gendesk-1.0.6-1 giblib-1.2.4-8 gnome-common-3.18.0-4 go-2:1.15.6-1 go-bindata-3.5.2-2
gobject-introspection-1.66.1-3 gperf-3.1-3 haskell-bitarray-0.0.1.1-19 haskell-citeproc-0.2-9 haskell-cmark-gfm-0.2.2-20 haskell-commonmark-pandoc-0.2.0.1-36 haskell-doctemplates-0.8.3-10 haskell-glob-0.10.1-33
haskell-haddock-library-1.9.0-65 haskell-hslua-module-system-0.2.2.1-22 haskell-hslua-module-text-0.3.0.1-10 haskell-http-4000.3.15-57 haskell-http-client-tls-0.3.5.3-344 haskell-ipynb-0.1.0.1-128
haskell-jira-wiki-markup-1.3.2-32 haskell-juicypixels-3.3.5-42 haskell-regex-pcre-0.95.0.0-7 haskell-sha-1.6.4.4-15 haskell-skylighting-0.10.0.2-4 haskell-tagsoup-0.14.8-67 haskell-texmath-0.12.0.3-48
haskell-unicode-transforms-0.3.7.1-16 haskell-zip-archive-0.4.1-71 ibus-1.5.23+3+gaa558de8-2 ipython2-5.9.0-1 jq-1.6-4 js68-68.12.0-1 kitty-terminfo-0.19.3-1 libgpod-0.8.3-11 libguess-1.2-3
libhandy0-0.0.13+12+gaa6b6f4-2 libkcddb-20.12.0-1 libkeybinder2-0.3.1-4 liblastfm-qt5-1.0.9-5 libmspack-1:0.10.1alpha-3 libmygpo-qt5-1.1.0-3 liborcus-0.16.1-5 libpqxx-6.4.5-2 libspf2-1.2.10-5 lsb-release-1.4-18
lv2-1.18.0-1 mathjax2-2.7.9-1 perl-number-bytes-human-0.11-4 perl-test-needs-0.002006-3 perl-test-pod-1.52-5 pygtk-2.24.0-12 python-atomicwrites-1.4.0-3 python-click-log-0.3.2-7 python-configobj-5.0.6-10
python-flask-babel-2.0.0-3 python-icalendar-4.0.7-3 python-pipenv-2020.11.15-1 python-pytoml-0.1.21-6 python-tensorflow-serving-api-2.3.0-2 python-tzlocal-2.1-3 python-urwid-2.1.1-3 python-yaml-5.3.1-4
python2-apsw-3.33.0-3 python2-dateutil-2.8.1-5 python2-dbus-1.2.16-3 python2-feedparser-5.2.1-9 python2-ipaddress-1.0.23-2 python2-msgpack-0.6.2-4 python2-mutagen-1.43.0-3 python2-pillow-6.2.1-3
python2-psutil-5.7.3-3 python2-simplejson-3.17.2-3 quilt-0.66-2 sndio-1.7.0-3 tesseract-4.1.1-4 uwsgi-plugin-python-2.0.19.1-7 wxgtk2-3.0.5.1-1 xorg-bdftopcf-1.1-2 xorg-font-util-1.3.2-2 xorg-mkfontscale-1.2.1-2
xorg-server-xvfb-1.20.10-3 yasm-1.3.0-4
Total Removed Size: 867.02 MiB
:: Do you want to remove these packages? [Y/n] y
...
## ***************************
## ** Subsequent cycles: ***
## ***************************
Packages (47) autoconf-archive-1:2019.01.06-4 cmake-3.19.2-1 cmark-gfm-0.29.0.gfm.0-2 diffstat-1.63-1 gtk-doc-1.33.1-1 haskell-aeson-pretty-0.8.8-101 haskell-commonmark-extensions-0.2.0.4-6 haskell-connection-0.3.1-72
haskell-data-default-0.7.1.1-92 haskell-digest-0.0.1.2-21 haskell-doclayout-0.3-50 haskell-file-embed-0.0.13.0-2 haskell-hslua-1.3.0-7 haskell-hsyaml-0.2.1.0-57 haskell-http-client-0.7.3-22
haskell-old-time-1.1.0.3-26 haskell-pandoc-types-1.22-20 haskell-regex-base-0.94.0.0-7 haskell-skylighting-core-0.10.0.2-4 haskell-temporary-1.3-145 haskell-text-conversions-0.3.1-22 haskell-text-icu-0.7.0.1-36
haskell-uniplate-1.6.13-9 haskell-xml-1.3.14-26 haskell-xml-conduit-1.9.0.0-82 intltool-0.51.0-6 leptonica-1.80.0-1 libixion-0.16.1-5 libmusicbrainz5-5.1.0-4 python-certifi-2020.6.20-3 python-flask-1.1.2-4
python-greenlet-0.4.17-3 python-mako-1.1.3-3 python-speaklater-1.3-9 python-virtualenv-20.2.2-1 python-virtualenv-clone-0.5.4-3 python2-backports.shutil_get_terminal_size-1.0.0-4 python2-cairo-1.18.2-4
python2-gobject2-2.28.7-6 python2-numpy-1.16.6-1 python2-olefile-0.46-3 python2-pexpect-4.8.0-3 python2-pickleshare-0.7.5-5 python2-prompt_toolkit1-1.0.15-2 python2-traitlets-4.3.3-6 sg3_utils-1.45-1
yelp-tools-3.38.0-1
Packages (41) glib2-docs-2.66.4-1 haskell-aeson-1.5.4.1-26 haskell-ansi-terminal-0.11-25 haskell-base16-bytestring-1.0.1.0-1 haskell-base64-bytestring-1.2.0.1-8 haskell-blaze-html-0.9.1.2-62 haskell-cmdargs-0.10.20-15
haskell-commonmark-0.1.1.2-7 haskell-conduit-extra-1.3.5-75 haskell-cookie-0.4.5-8 haskell-data-default-instances-containers-0.0.1-32 haskell-data-default-instances-dlist-0.0.1-105
haskell-data-default-instances-old-locale-0.0.1-32 haskell-emojis-0.1-52 haskell-errors-2.3.0-58 haskell-http-types-0.12.3-105 haskell-hxt-9.3.1.18-185 haskell-mime-types-0.1.0.9-10 haskell-quickcheck-2.14.2-24
haskell-socks-0.6.1-64 haskell-syb-0.7.1-8 haskell-tls-1.5.4-52 haskell-utf8-string-1.0.1.1-20 haskell-x509-system-1.6.6-164 haskell-xml-types-0.3.8-4 itstool-1:2.0.6-2 jsoncpp-1.9.4-1 mallard-ducktype-1.0.2-6
python-anytree-2.8.0-3 python-beaker-1.11.0-6 python-filelock-3.0.12-5 python-itsdangerous-1.1.0-6 python-jinja-2.11.2-4 python2-decorator-4.4.2-3 python2-enum34-1.1.9-1 python2-pathlib-1.0.1-5
python2-ptyprocess-0.6.0-6 python2-pygments-2.5.2-2 python2-wcwidth-0.2.5-3 rhash-1.4.0-1 yelp-xsl-3.38.2-1
Packages (23) haskell-attoparsec-0.13.2.4-41 haskell-base-compat-batteries-0.11.2-18 haskell-blaze-markup-0.8.2.7-32 haskell-case-insensitive-1.2.1.0-44 haskell-cereal-0.5.8.1-8 haskell-colour-2.3.5-83 haskell-conduit-1.3.4-8
haskell-data-fix-0.3.0-32 haskell-dlist-1.0-28 haskell-erf-2.0.0.0-20 haskell-hxt-regex-xmlschema-9.2.0.3-24 haskell-hxt-unicode-9.0.2.4-20 haskell-network-uri-2.6.3.0-204 haskell-old-locale-1.0.0.7-26
haskell-safe-0.3.19-4 haskell-streaming-commons-0.2.2.1-33 haskell-strict-0.4.0.1-6 haskell-time-compat-1.9.5-6 haskell-typed-process-0.2.6.0-68 haskell-uuid-types-1.0.3-63 haskell-x509-validation-1.6.11-96
python-babel-2.9.0-1 python-markupsafe-1.1.1-6
Packages (14) haskell-async-2.2.2-48 haskell-base-compat-0.11.2-3 haskell-blaze-builder-0.4.1.0-15 haskell-byteable-0.1.1-21 haskell-data-default-class-0.1.2.0-20 haskell-hxt-charproperties-9.4.0.0-8
haskell-mono-traversable-1.0.15.1-79 haskell-network-3.1.2.1-6 haskell-random-1.2.0-68 haskell-resourcet-1.2.4.2-36 haskell-scientific-0.3.6.2-58 haskell-these-1.1.1.1-33 haskell-x509-store-1.6.7-96
haskell-zlib-0.6.2.2-4
Packages (8) haskell-assoc-1.0.2-32 haskell-integer-logarithms-1.0.3.1-2 haskell-split-0.2.3.4-86 haskell-splitmix-0.1.0.3-13 haskell-unliftio-core-0.2.0.1-5 haskell-unordered-containers-0.2.13.0-16
haskell-vector-algorithms-0.8.0.4-6 haskell-x509-1.7.5-97
Packages (6) haskell-asn1-parse-0.9.5-63 haskell-bifunctors-5.5.8-22 haskell-cryptonite-0.27-37 haskell-hashable-1.3.0.0-44 haskell-pem-0.2.4-119 haskell-vector-0.12.1.2-76
Packages (3) haskell-asn1-types-0.3.4-42 haskell-distributive-0.6.2-48 haskell-transformers-compat-0.6.6-2
Packages (4) haskell-base-orphans-0.8.4-8 haskell-hourglass-0.2.12-87 haskell-memory-0.15.0-54 haskell-tagged-0.8.6-13
Packages (1) haskell-basement-0.0.11-9
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