WIP: broken merge but need a git checkpoint

1 files changed, 37 insertions, 18 deletions

diff --git a/src/nix/flake.cc b/src/nix/flake.cc
index f88676dc4..3d90cfc05 100644
--- a/src/nix/flake.cc
+++ b/src/nix/flake.cc
@@ -50,9 +50,9 @@ public:
         return flake::lockFlake(*getEvalState(), getFlakeRef(), lockFlags);
     }
 
-    std::optional<FlakeRef> getFlakeRefForCompletion() override
+    std::vector<std::string> getFlakesForCompletion() override
     {
-        return getFlakeRef();
+        return {flakeUrl};
     }
 };
 
@@ -212,7 +212,8 @@ struct CmdFlakeMetadata : FlakeCommand, MixJSON
                     ANSI_BOLD "Last modified:" ANSI_NORMAL " %s",
                     std::put_time(std::localtime(&*lastModified), "%F %T"));
 
-            logger->cout(ANSI_BOLD "Inputs:" ANSI_NORMAL);
+            if (!lockedFlake.lockFile.root->inputs.empty())
+                logger->cout(ANSI_BOLD "Inputs:" ANSI_NORMAL);
 
             std::unordered_set<std::shared_ptr<Node>> visited;
 
@@ -509,7 +510,7 @@ struct CmdFlakeCheck : FlakeCommand
 
                         std::string_view replacement =
                             name == "defaultPackage" ? "packages.<system>.default" :
-                            name == "defaultApps" ? "apps.<system>.default" :
+                            name == "defaultApp" ? "apps.<system>.default" :
                             name == "defaultTemplate" ? "templates.default" :
                             name == "defaultBundler" ? "bundlers.<system>.default" :
                             name == "overlay" ? "overlays.default" :
@@ -724,7 +725,7 @@ struct CmdFlakeInitCommon : virtual Args, EvalCommand
         auto [templateFlakeRef, templateName] = parseFlakeRefWithFragment(templateUrl, absPath("."));
 
         auto installable = InstallableFlake(nullptr,
-            evalState, std::move(templateFlakeRef), templateName,
+            evalState, std::move(templateFlakeRef), templateName, DefaultOutputs(),
             defaultTemplateAttrPaths,
             defaultTemplateAttrPathsPrefixes,
             lockFlags);
@@ -740,7 +741,8 @@ struct CmdFlakeInitCommon : virtual Args, EvalCommand
                 "If you've set '%s' to a string, try using a path instead.",
                 templateDir, templateDirAttr->getAttrPathStr());
 
-        std::vector<Path> files;
+        std::vector<Path> changedFiles;
+        std::vector<Path> conflictedFiles;
 
         std::function<void(const Path & from, const Path & to)> copyDir;
         copyDir = [&](const Path & from, const Path & to)
@@ -757,31 +759,41 @@ struct CmdFlakeInitCommon : virtual Args, EvalCommand
                     auto contents = readFile(from2);
                     if (pathExists(to2)) {
                         auto contents2 = readFile(to2);
-                        if (contents != contents2)
-                            throw Error("refusing to overwrite existing file '%s'", to2);
+                        if (contents != contents2) {
+                            printError("refusing to overwrite existing file '%s'\n please merge it manually with '%s'", to2, from2);
+                            conflictedFiles.push_back(to2);
+                        } else {
+                            notice("skipping identical file: %s", from2);
+                        }
+                        continue;
                     } else
                         writeFile(to2, contents);
                 }
                 else if (S_ISLNK(st.st_mode)) {
                     auto target = readLink(from2);
                     if (pathExists(to2)) {
-                        if (readLink(to2) != target)
-                            throw Error("refusing to overwrite existing symlink '%s'", to2);
+                        if (readLink(to2) != target) {
+                            printError("refusing to overwrite existing file '%s'\n please merge it manually with '%s'", to2, from2);
+                            conflictedFiles.push_back(to2);
+                        } else {
+                            notice("skipping identical file: %s", from2);
+                        }
+                        continue;
                     } else
                           createSymlink(target, to2);
                 }
                 else
                     throw Error("file '%s' has unsupported type", from2);
-                files.push_back(to2);
+                changedFiles.push_back(to2);
                 notice("wrote: %s", to2);
             }
         };
 
         copyDir(templateDir, flakeDir);
 
-        if (pathExists(flakeDir + "/.git")) {
+        if (!changedFiles.empty() && pathExists(flakeDir + "/.git")) {
             Strings args = { "-C", flakeDir, "add", "--intent-to-add", "--force", "--" };
-            for (auto & s : files) args.push_back(s);
+            for (auto & s : changedFiles) args.push_back(s);
             runProgram("git", true, args);
         }
         auto welcomeText = cursor->maybeGetAttr("welcomeText");
@@ -789,6 +801,9 @@ struct CmdFlakeInitCommon : virtual Args, EvalCommand
             notice("\n");
             notice(renderMarkdownToTerminal(welcomeText->getString()));
         }
+
+        if (!conflictedFiles.empty())
+            throw Error("Encountered %d conflicts - see above", conflictedFiles.size());
     }
 };
 
@@ -1015,8 +1030,8 @@ struct CmdFlakeShow : FlakeCommand, MixJSON
                     auto name = visitor.getAttr(state->sName)->getString();
                     if (json) {
                         std::optional<std::string> description;
-                        if (auto aMeta = visitor.maybeGetAttr("meta")) {
-                            if (auto aDescription = aMeta->maybeGetAttr("description"))
+                        if (auto aMeta = visitor.maybeGetAttr(state->sMeta)) {
+                            if (auto aDescription = aMeta->maybeGetAttr(state->sDescription))
                                 description = aDescription->getString();
                         }
                         j.emplace("type", "derivation");
@@ -1076,9 +1091,13 @@ struct CmdFlakeShow : FlakeCommand, MixJSON
                 else if (attrPath.size() > 0 && attrPathS[0] == "legacyPackages") {
                     if (attrPath.size() == 1)
                         recurse();
-                    else if (!showLegacy)
-                        logger->warn(fmt("%s: " ANSI_WARNING "omitted" ANSI_NORMAL " (use '--legacy' to show)", headerPrefix));
-                    else {
+                    else if (!showLegacy){
+                        if (!json)
+                            logger->cout(fmt("%s " ANSI_WARNING "omitted" ANSI_NORMAL " (use '--legacy' to show)", headerPrefix));
+                        else {
+                            logger->warn(fmt("%s omitted (use '--legacy' to show)", concatStringsSep(".", attrPathS)));
+                        }
+                    } else {
                         if (visitor.isDerivation())
                             showDerivation();
                         else if (attrPath.size() <= 2)