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Merge pull request #9919 from 9999years/reduce-debugger-clutter

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Reduce visual clutter in the debugger
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Théophane Hufschmitt 2024-02-08 09:42:38 +01:00 committed by GitHub
commit f388a6148d
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3 changed files with 49 additions and 5 deletions
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37
doc/manual/rl-next/reduce-debugger-clutter.md Normal file
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@ -0,0 +1,37 @@
---
synopsis: "Visual clutter in `--debugger` is reduced"
prs: 9919
---
Before:
```
info: breakpoint reached
Starting REPL to allow you to inspect the current state of the evaluator.
Welcome to Nix 2.20.0pre20231222_dirty. Type :? for help.
nix-repl> :continue
error: uh oh
Starting REPL to allow you to inspect the current state of the evaluator.
Welcome to Nix 2.20.0pre20231222_dirty. Type :? for help.
nix-repl>
```
After:
```
info: breakpoint reached
Nix 2.20.0pre20231222_dirty debugger
Type :? for help.
nix-repl> :continue
error: uh oh
nix-repl>
```

13
src/libcmd/repl.cc
View file

@ -243,10 +243,19 @@ static std::ostream & showDebugTrace(std::ostream & out, const PosTable & positi
return out;
}
static bool isFirstRepl = true;
void NixRepl::mainLoop()
{
std::string error = ANSI_RED "error:" ANSI_NORMAL " ";
notice("Welcome to Nix " + nixVersion + ". Type :? for help.\n");
if (isFirstRepl) {
std::string_view debuggerNotice = "";
if (state->debugRepl) {
debuggerNotice = " debugger";
}
notice("Nix %1%%2%\nType :? for help.", nixVersion, debuggerNotice);
}
isFirstRepl = false;
loadFiles();

4
src/libexpr/eval.cc
View file

@ -821,12 +821,10 @@ void EvalState::runDebugRepl(const Error * error, const Env & env, const Expr &
if (error)
{
printError("%s\n\n", error->what());
printError("%s\n", error->what());
if (trylevel > 0 && error->info().level != lvlInfo)
printError("This exception occurred in a 'tryEval' call. Use " ANSI_GREEN "--ignore-try" ANSI_NORMAL " to skip these.\n");
printError(ANSI_BOLD "Starting REPL to allow you to inspect the current state of the evaluator.\n" ANSI_NORMAL);
}
auto se = getStaticEnv(expr);