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Explain when man is missing

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Have you seen this man?

Fixes #10677
This commit is contained in:
Robert Hensing 2024-07-05 18:32:34 +02:00
parent 8f280d72ff
commit 6ef00a503a
2 changed files with 7 additions and 0 deletions
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4
src/libmain/shared.cc
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@ -320,6 +320,10 @@ void showManPage(const std::string & name)
restoreProcessContext();
setEnv("MANPATH", settings.nixManDir.c_str());
execlp("man", "man", name.c_str(), nullptr);
if (errno == ENOENT) {
// Not SysError because we don't want to suffix the errno, aka No such file or directory.
throw Error("The '%1%' command was not found, but it is needed for '%2%' and some other '%3%' commands' help text. Perhaps you could install the '%1%' command?", "man", name.c_str(), "nix-*");
}
throw SysError("command 'man %1%' failed", name.c_str());
}

3
tests/functional/misc.sh
View file

@ -13,6 +13,9 @@ source common.sh
# Can we ask for the version number?
nix-env --version | grep "$version"
nix_env=$(type -P nix-env)
(PATH=""; ! $nix_env --help 2>&1 ) | grepQuiet -F "The 'man' command was not found, but it is needed for 'nix-env' and some other 'nix-*' commands' help text. Perhaps you could install the 'man' command?"
# Usage errors.
expect 1 nix-env --foo 2>&1 | grep "no operation"
expect 1 nix-env -q --foo 2>&1 | grep "unknown flag"