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nix-shell: Ignore readFile() errors

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Fixes #1563.
This commit is contained in:
Eelco Dolstra 2017-09-18 13:28:00 +02:00
parent aca4f7dff0
commit 84f112b1c8
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GPG key ID: 8170B4726D7198DE
1 changed files with 5 additions and 5 deletions
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10
src/nix-build/nix-build.cc
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@ -105,12 +105,12 @@ void mainWrapped(int argc, char * * argv)
for (int i = 1; i < argc; ++i)
args.push_back(argv[i]);
// Heuristic to see if we're invoked as a shebang script, namely, if we
// have a single argument, it's the name of an executable file, and it
// starts with "#!".
// Heuristic to see if we're invoked as a shebang script, namely,
// if we have at least one argument, it's the name of an
// executable file, and it starts with "#!".
if (runEnv && argc > 1 && !std::regex_search(argv[1], std::regex("nix-shell"))) {
script = argv[1];
if (access(script.c_str(), F_OK) == 0 && access(script.c_str(), X_OK) == 0) {
try {
auto lines = tokenizeString<Strings>(readFile(script), "\n");
if (std::regex_search(lines.front(), std::regex("^#!"))) {
lines.pop_front();
@ -126,7 +126,7 @@ void mainWrapped(int argc, char * * argv)
args.push_back(word);
}
}
}
} catch (SysError &) { }
}
parseCmdLine(myName, args, [&](Strings::iterator & arg, const Strings::iterator & end) {