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https://github.com/NixOS/nix
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nix repl: Add :ll
to show all recently loaded variables
Invoking `:ll` will start a pager with all variables which have just been loaded by `:lf`, `:l`, or by a flake provided to `nix repl` as an argument. https://github.com/NixOS/nix/issues/11404
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@ -72,6 +72,7 @@ struct NixRepl
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const static int envSize = 32768;
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std::shared_ptr<StaticEnv> staticEnv;
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Value lastLoaded;
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Env * env;
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int displ;
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StringSet varNames;
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@ -96,6 +97,7 @@ struct NixRepl
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void loadFile(const Path & path);
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void loadFlake(const std::string & flakeRef);
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void loadFiles();
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void showLastLoaded();
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void reloadFiles();
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void addAttrsToScope(Value & attrs);
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void addVarToScope(const Symbol name, Value & v);
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@ -470,6 +472,10 @@ ProcessLineResult NixRepl::processLine(std::string line)
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loadFlake(arg);
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}
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else if (command == ":ll" || command == ":last-flake") {
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showLastLoaded();
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}
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else if (command == ":r" || command == ":reload") {
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state->resetFileCache();
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reloadFiles();
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@ -750,6 +756,16 @@ void NixRepl::initEnv()
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varNames.emplace(state->symbols[i.first]);
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}
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void NixRepl::showLastLoaded()
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{
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RunPager pager;
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for (auto & i : *lastLoaded.attrs()) {
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std::string_view name = state->symbols[i.name];
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logger->cout(name);
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}
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}
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void NixRepl::reloadFiles()
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{
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@ -791,12 +807,14 @@ void NixRepl::addAttrsToScope(Value & attrs)
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staticEnv->deduplicate();
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notice("Added %1% variables.", attrs.attrs()->size());
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lastLoaded = attrs;
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const int max_print = 10;
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int count = 0;
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for (auto & i : *attrs.attrs()) {
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count += 1;
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if (count > max_print) {
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notice("... And %1% other variables", attrs.attrs()->size() - max_print);
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notice("... And %1% other variables, use :ll to see these", attrs.attrs()->size() - max_print);
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break;
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}
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@ -193,7 +193,7 @@ attributes = builtins.foldl\' (x: y: x // y) {} (map (x: { ${builtins.toString x
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- 7
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- 8
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- 9
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... And 3 other variables
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... And 3 other variables, use :ll to see these
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'
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# Test the `:reload` mechansim with flakes:
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@ -346,7 +346,7 @@ runRepl () {
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-e "s@$nixVersion@<nix version>@g" \
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-e "s@Added [0-9]* variables@Added <number omitted> variables@g" \
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-e '/^- /d' \
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-e '/\.\.\. And [0-9]* other variables/d' \
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-e '/\.\.\. And [0-9]* other variables, use :ll to see these/d' \
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| grep -vF $'warning: you don\'t have Internet access; disabling some network-dependent features' \
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;
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}
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