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repl: wrap std::filesystem error into SysError

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/tmp/ecstatic-euler-mAFGV7
% /home/joerg/git/nix/build/subprojects/nix/nix repl
Nix 2.25.0
Type :? for help.

after doing rm /tmp/ecstatic-euler-mAFGV7 this will result in:

nix-repl> :lf .
error: cannot determine current working directory: No such file or directory

Before it would make the repl crash

/tmp/clever-hermann-MCm7A9
% /home/joerg/git/nix/build/subprojects/nix/nix repl
Nix 2.25.0
Type :? for help.
nix-repl> :lf .
error: filesystem error: cannot get current path: No such file or directory
This commit is contained in:
Jörg Thalheim 2024-09-05 10:59:43 +02:00
parent 22ba4dc78d
commit 05a1ffe236
1 changed files with 9 additions and 1 deletions
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10
src/libcmd/repl.cc
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@ -2,6 +2,7 @@
#include <cstdlib>
#include <cstring>
#include "error.hh"
#include "repl-interacter.hh"
#include "repl.hh"
@ -720,7 +721,14 @@ void NixRepl::loadFlake(const std::string & flakeRefS)
if (flakeRefS.empty())
throw Error("cannot use ':load-flake' without a path specified. (Use '.' for the current working directory.)");
auto flakeRef = parseFlakeRef(fetchSettings, flakeRefS, std::filesystem::current_path().string(), true);
std::filesystem::path cwd;
try {
cwd = std::filesystem::current_path();
} catch (std::filesystem::filesystem_error & e) {
throw SysError("cannot determine current working directory");
}
auto flakeRef = parseFlakeRef(fetchSettings, flakeRefS, cwd.string(), true);
if (evalSettings.pureEval && !flakeRef.input.isLocked())
throw Error("cannot use ':load-flake' on locked flake reference '%s' (use --impure to override)", flakeRefS);