Linux下Haskell 9.4.8的GHCI启动失败求助：路径缺失问题

问题核心回答 #

是的，/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/下必须存在包含可执行文件的bin目录，这是GHC标准安装结构的一部分，脚本中引用的路径是正确的预期路径，目录缺失说明安装过程存在损坏或未完成的情况。

解决步骤 #

• 强制重新安装GHC 9.4.8
  最可能的原因是安装包下载损坏或解压不完全，执行以下命令重新安装：

  ghcup install ghc 9.4.8 --force
  

  安装完成后再次尝试启动ghci。

• 升级ghcup后重新安装
  旧版本ghcup可能存在路径配置bug，先升级ghcup：

  ghcup upgrade
  

  升级完成后再执行上面的强制安装命令。

• 检查文件系统结构（临时修复方案）
  如果重新安装后仍无bin目录，检查/root/.ghcup/ghc/9.4.8/下是否存在lib/ghc-9.4.8/bin目录（部分系统可能用lib而非lib64）：

  ls -l /root/.ghcup/ghc/9.4.8/lib/ghc-9.4.8/
  

  若存在该目录，修改ghc-9.4.8和ghci-9.4.8脚本中的路径：
  将脚本里的lib64替换为lib，例如：

  # 修改ghc-9.4.8脚本中的行
  exedir="/root/.ghcup/ghc/9.4.8/lib/ghc-9.4.8/bin"
  executablename="/root/.ghcup/ghc/9.4.8/lib/ghc-9.4.8/bin/./ghc-9.4.8"
  libdir="/root/.ghcup/ghc/9.4.8/lib/ghc-9.4.8/lib"
  

  注意：此为临时修复，优先推荐重新安装保证结构正确性。

• 验证权限
  确保安装目录权限正常：

  chmod -R 755 /root/.ghcup/ghc/9.4.8/
  

问题相关信息 #

报错信息 #

/root/.ghcup/ghc/9.4.8/bin/ghc-9.4.8: line 12: /root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghc-9.4.8: No such file or directory

ghci-9.4.8脚本内容 #

#!/bin/sh
set -xv
echo "In GHCI 9.4.8"
exedir="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin"
exeprog="./ghci-9.4.8"
executablename="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghci-9.4.8"
bindir="/root/.ghcup/ghc/9.4.8/bin"
libdir="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/lib"
docdir="/root/.ghcup/ghc/9.4.8/share/doc/ghc-9.4.8"
includedir="/root/.ghcup/ghc/9.4.8/include"

executable="$bindir/ghc-9.4.8"
exec $executable --interactive "$@"

ghc-9.4.8脚本内容 #

#!/bin/sh
set -xv
echo "In GHC 9.4.8"
exedir="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin"
exeprog="./ghc-9.4.8"
executablename="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghc-9.4.8"
bindir="/root/.ghcup/ghc/9.4.8/bin"
libdir="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/lib"
docdir="/root/.ghcup/ghc/9.4.8/share/doc/ghc-9.4.8"
includedir="/root/.ghcup/ghc/9.4.8/include"

exec "$executablename" -B"$libdir" ${1+"$@"}

执行日志 #

opensuse-64:~ # ghci
echo "In GHCI 9.4.8"
+ echo 'In GHCI 9.4.8'
In GHCI 9.4.8
exedir="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin"
+ exedir=/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin
exeprog="./ghci-9.4.8"
+ exeprog=./ghci-9.4.8
executablename="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghci-9.4.8"
+ executablename=/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghci-9.4.8
bindir="/root/.ghcup/ghc/9.4.8/bin"
+ bindir=/root/.ghcup/ghc/9.4.8/bin
libdir="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/lib"
+ libdir=/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/lib
docdir="/root/.ghcup/ghc/9.4.8/share/doc/ghc-9.4.8"
+ docdir=/root/.ghcup/ghc/9.4.8/share/doc/ghc-9.4.8
includedir="/root/.ghcup/ghc/9.4.8/include"
+ includedir=/root/.ghcup/ghc/9.4.8/include

executable="$bindir/ghc-9.4.8"
+ executable=/root/.ghcup/ghc/9.4.8/bin/ghc-9.4.8
exec $executable --interactive "$@"
+ exec /root/.ghcup/ghc/9.4.8/bin/ghc-9.4.8 --interactive

echo "In GHC 9.4.8"
+ echo 'In GHC 9.4.8'
In GHC 9.4.8
exedir="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin"
+ exedir=/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin
exeprog="./ghc-9.4.8"
+ exeprog=./ghc-9.4.8
executablename="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghc-9.4.8"
+ executablename=/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghc-9.4.8
bindir="/root/.ghcup/ghc/9.4.8/bin"
+ bindir=/root/.ghcup/ghc/9.4.8/bin
libdir="/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/lib"
+ libdir=/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/lib
docdir="/root/.ghcup/ghc/9.4.8/share/doc/ghc-9.4.8"
+ docdir=/root/.ghcup/ghc/9.4.8/share/doc/ghc-9.4.8
includedir="/root/.ghcup/ghc/9.4.8/include"
+ includedir=/root/.ghcup/ghc/9.4.8/include

exec "$executablename" -B"$libdir" ${1+"$@"}
+ exec /root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghc-9.4.8 -B/root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/lib --interactive
/root/.ghcup/ghc/9.4.8/bin/ghc-9.4.8: line 12: /root/.ghcup/ghc/9.4.8/lib64/ghc-9.4.8/bin/./ghc-9.4.8: No such file or directory

内容的提问来源于stack exchange，提问作者v0rl0n