convert some printError calls to logError

src/build-remote/build-remote.cc

@@ -200,9 +200,13 @@ static int _main(int argc, char * * argv)
 
                 } catch (std::exception & e) {
                     auto msg = chomp(drainFD(5, false));
-                    printError("cannot build on '%s': %s%s",
+                    logError(
+                        ErrorInfo { 
+                            .name = "remote build",
+                            .hint = hintfmt("cannot build on '%s': %s%s",
                         bestMachine->storeUri, e.what(),
-                        (msg.empty() ? "" : ": " + msg));
+                        (msg.empty() ? "" : ": " + msg))
+                    });
                     bestMachine->enabled = false;
                     continue;
                 }

src/libexpr/parser.y

@@ -689,8 +689,12 @@ std::pair<bool, std::string> EvalState::resolveSearchPathElem(const SearchPathEl
             request.unpack = true;
             res = { true, getDownloader()->downloadCached(store, request).path };
         } catch (DownloadError & e) {
-            // TODO: change to warn()?
+            logWarning(
-            printError("warning: Nix search path entry '%1%' cannot be downloaded, ignoring", elem.second);
+                ErrorInfo { 
+                    .name = "Download Error",
+                    .hint = hintfmt("warning: Nix search path entry '%1%' cannot be downloaded, ignoring", elem.second)
+            });
+
             res = { false, "" };
         }
     } else {
@@ -698,8 +702,11 @@ std::pair<bool, std::string> EvalState::resolveSearchPathElem(const SearchPathEl
         if (pathExists(path))
             res = { true, path };
         else {
-            // TODO: change to warn()?
+            logWarning(
-            printError("warning: Nix search path entry '%1%' does not exist, ignoring", elem.second);
+                ErrorInfo { 
+                    .name = "Search path not found",
+                    .hint = hintfmt("warning: Nix search path entry '%1%' does not exist, ignoring", elem.second)
+            });
             res = { false, "" };
         }
     }

src/libmain/shared.cc

@@ -300,21 +300,21 @@ int handleExceptions(const string & programName, std::function<void()> fun)
     } catch (UsageError & e) {
         // TODO: switch to logError
         // logError(e.info());
-        printError(
+        _printError(
             format("%1%\nTry '%2% --help' for more information.")
             % e.what() % programName);
         return 1;
     } catch (BaseError & e) {
         // logError(e.info());
-        printError("%1%%2%", (settings.showTrace ? e.prefix() : ""), e.msg());
+        _printError("%1%%2%", (settings.showTrace ? e.prefix() : ""), e.msg());
         if (e.prefix() != "" && !settings.showTrace)
-            printError("(use '--show-trace' to show detailed location information)");
+            _printError("(use '--show-trace' to show detailed location information)");
         return e.status;
     } catch (std::bad_alloc & e) {
-        printError(error + "out of memory");
+        _printError(error + "out of memory");
         return 1;
     } catch (std::exception & e) {
-        printError(error + e.what());
+        _printError(error + e.what());
         return 1;
     }
 

src/libstore/build.cc

@@ -493,7 +493,9 @@ void handleDiffHook(
             if (diffRes.second != "")
                 printError(chomp(diffRes.second));
         } catch (Error & error) {
-            printError("diff hook execution failed: %s", error.what());
+            // logError(error.info())
+            // TODO append message onto errorinfo...
+            _printError("diff hook execution failed: %s", error.what());
         }
     }
 }
@@ -1144,7 +1146,11 @@ void DerivationGoal::loadDerivation()
     trace("loading derivation");
 
     if (nrFailed != 0) {
-        printError("cannot build missing derivation '%s'", worker.store.printStorePath(drvPath));
+        logError(
+            ErrorInfo { 
+                .name = "missing derivation during build",
+                .hint = hintfmt("cannot build missing derivation '%s'", worker.store.printStorePath(drvPath))
+        });
         done(BuildResult::MiscFailure);
         return;
     }
@@ -1295,8 +1301,14 @@ void DerivationGoal::repairClosure()
     /* Check each path (slow!). */
     for (auto & i : outputClosure) {
         if (worker.pathContentsGood(i)) continue;
-        printError("found corrupted or missing path '%s' in the output closure of '%s'",
+        logError(
-            worker.store.printStorePath(i), worker.store.printStorePath(drvPath));
+            ErrorInfo { 
+                .name = "Corrupt path in closure",
+                .hint = hintfmt(
+                    "found corrupted or missing path '%s' in the output closure of '%s'",
+                    worker.store.printStorePath(i), worker.store.printStorePath(drvPath))
+        });
+
         auto drvPath2 = outputsToDrv.find(i);
         if (drvPath2 == outputsToDrv.end())
             addWaitee(worker.makeSubstitutionGoal(i, Repair));
@@ -1330,8 +1342,13 @@ void DerivationGoal::inputsRealised()
     if (nrFailed != 0) {
         if (!useDerivation)
             throw Error("some dependencies of '%s' are missing", worker.store.printStorePath(drvPath));
-        printError("cannot build derivation '%s': %s dependencies couldn't be built",
+        logError(
-            worker.store.printStorePath(drvPath), nrFailed);
+            ErrorInfo { 
+                .name = "Dependencies could not be built",
+                .hint = hintfmt(
+                    "cannot build derivation '%s': %s dependencies couldn't be built",
+                    worker.store.printStorePath(drvPath), nrFailed)
+        });
         done(BuildResult::DependencyFailed);
         return;
     }
@@ -1489,7 +1506,7 @@ void DerivationGoal::tryToBuild()
         startBuilder();
 
     } catch (BuildError & e) {
-        printError(e.msg());
+        logError(e.info());
         outputLocks.unlock();
         buildUser.reset();
         worker.permanentFailure = true;
@@ -1709,7 +1726,7 @@ void DerivationGoal::buildDone()
         outputLocks.unlock();
 
     } catch (BuildError & e) {
-        printError(e.msg());
+        logError(e.info());
 
         outputLocks.unlock();
 
@@ -1788,8 +1805,13 @@ HookReply DerivationGoal::tryBuildHook()
 
     } catch (SysError & e) {
         if (e.errNo == EPIPE) {
-            printError("build hook died unexpectedly: %s",
+            logError(
-                chomp(drainFD(worker.hook->fromHook.readSide.get())));
+                ErrorInfo { 
+                    .name = "Build hook died",
+                    .hint = hintfmt(
+                        "build hook died unexpectedly: %s",
+                        chomp(drainFD(worker.hook->fromHook.readSide.get())))
+            });
             worker.hook = 0;
             return rpDecline;
         } else
@@ -3783,10 +3805,10 @@ void DerivationGoal::registerOutputs()
                 result.isNonDeterministic = true;
                 Path prev = worker.store.printStorePath(i->second.path) + checkSuffix;
                 bool prevExists = keepPreviousRound && pathExists(prev);
-                auto msg = prevExists
+                hintformat hint = prevExists
-                    ? fmt("output '%s' of '%s' differs from '%s' from previous round",
+                    ? hintfmt("output '%s' of '%s' differs from '%s' from previous round",
                         worker.store.printStorePath(i->second.path), worker.store.printStorePath(drvPath), prev)
-                    : fmt("output '%s' of '%s' differs from previous round",
+                    : hintfmt("output '%s' of '%s' differs from previous round",
                         worker.store.printStorePath(i->second.path), worker.store.printStorePath(drvPath));
 
                 handleDiffHook(
@@ -3796,9 +3818,15 @@ void DerivationGoal::registerOutputs()
                     worker.store.printStorePath(drvPath), tmpDir);
 
                 if (settings.enforceDeterminism)
-                    throw NotDeterministic(msg);
+                    throw NotDeterministic(hint);
+
+                logError(
+                    ErrorInfo { 
+                        .name = "Output determinism error",
+                        .hint = hint
+                });
+
 
-                printError(msg);
                 curRound = nrRounds; // we know enough, bail out early
             }
     }
@@ -4060,9 +4088,13 @@ void DerivationGoal::handleChildOutput(int fd, const string & data)
     {
         logSize += data.size();
         if (settings.maxLogSize && logSize > settings.maxLogSize) {
-            printError(
+            logError(
-                format("%1% killed after writing more than %2% bytes of log output")
+                ErrorInfo { 
-                % getName() % settings.maxLogSize);
+                    .name = "Max log size exceeded",
+                    .hint = hintfmt(
+                        "%1% killed after writing more than %2% bytes of log output",
+                        getName(), settings.maxLogSize)
+            });
             killChild();
             done(BuildResult::LogLimitExceeded);
             return;
@@ -4352,7 +4384,7 @@ void SubstitutionGoal::tryNext()
         throw;
     } catch (Error & e) {
         if (settings.tryFallback) {
-            printError(e.what());
+            logError(e.info());
             tryNext();
             return;
         }
@@ -4864,9 +4896,13 @@ void Worker::waitForInput()
             j->respectTimeouts &&
             after - j->lastOutput >= std::chrono::seconds(settings.maxSilentTime))
         {
-            printError(
+            logError(
-                format("%1% timed out after %2% seconds of silence")
+                ErrorInfo { 
-                % goal->getName() % settings.maxSilentTime);
+                    .name = "Silent build timeout",
+                    .hint = hintfmt(
+                        "%1% timed out after %2% seconds of silence",
+                        goal->getName(), settings.maxSilentTime)
+            });
             goal->timedOut();
         }
 
@@ -4875,9 +4911,13 @@ void Worker::waitForInput()
             j->respectTimeouts &&
             after - j->timeStarted >= std::chrono::seconds(settings.buildTimeout))
         {
-            printError(
+            logError(
-                format("%1% timed out after %2% seconds")
+                ErrorInfo { 
-                % goal->getName() % settings.buildTimeout);
+                    .name = "Build timeout",
+                    .hint = hintfmt(
+                        "%1% timed out after %2% seconds",
+                        goal->getName(), settings.buildTimeout)
+            });
             goal->timedOut();
         }
     }
@@ -4939,7 +4979,12 @@ bool Worker::pathContentsGood(const StorePath & path)
         res = info->narHash == nullHash || info->narHash == current.first;
     }
     pathContentsGoodCache.insert_or_assign(path.clone(), res);
-    if (!res) printError("path '%s' is corrupted or missing!", store.printStorePath(path));
+    if (!res) 
+        logError(
+            ErrorInfo { 
+                .name = "Corrupted path",
+                .hint = hintfmt("path '%s' is corrupted or missing!", store.printStorePath(path))
+        });
     return res;
 }
 

src/libstore/pathlocks.cc

@@ -160,7 +160,8 @@ void PathLocks::unlock()
 
         if (close(i.first) == -1)
             printError(
-                format("error (ignored): cannot close lock file on '%1%'") % i.second);
+                "error (ignored): cannot close lock file on '%1%'",
+                i.second);
 
         debug(format("lock released on '%1%'") % i.second);
     }

src/libstore/s3-binary-cache-store.cc

@@ -111,7 +111,9 @@ class RetryStrategy : public Aws::Client::DefaultRetryStrategy
         auto retry = Aws::Client::DefaultRetryStrategy::ShouldRetry(error, attemptedRetries);
         if (retry)
             printError("AWS error '%s' (%s), will retry in %d ms",
-                error.GetExceptionName(), error.GetMessage(), CalculateDelayBeforeNextRetry(error, attemptedRetries));
+                error.GetExceptionName(),
+                error.GetMessage(),
+                CalculateDelayBeforeNextRetry(error, attemptedRetries));
         return retry;
     }
 };

src/libstore/store-api.cc

@@ -961,7 +961,7 @@ std::list<ref<Store>> getDefaultSubstituters()
             try {
                 stores.push_back(openStore(uri));
             } catch (Error & e) {
-                printError("warning: %s", e.what());
+                logWarning(e.info());
             }
         };
 

src/libutil/affinity.cc

@@ -25,7 +25,7 @@ void setAffinityTo(int cpu)
     CPU_ZERO(&newAffinity);
     CPU_SET(cpu, &newAffinity);
     if (sched_setaffinity(0, sizeof(cpu_set_t), &newAffinity) == -1)
-        printError(format("failed to lock thread to CPU %1%") % cpu);
+        printError("failed to lock thread to CPU %1%", cpu);
 #endif
 }
 
@@ -47,7 +47,7 @@ void restoreAffinity()
 #if __linux__
     if (!didSaveAffinity) return;
     if (sched_setaffinity(0, sizeof(cpu_set_t), &savedAffinity) == -1)
-        printError("failed to restore affinity %1%");
+        _printError("failed to restore affinity");
 #endif
 }
 

src/libutil/error.hh

@@ -117,6 +117,12 @@ public:
               }
     { }
 
+    BaseError(hintformat hint)
+        : err { .level = lvlError,
+                .hint = hint
+              }
+    { }
+
     BaseError(ErrorInfo e)
         : err(e)
     { }

src/libutil/logging.hh

@@ -149,6 +149,7 @@ extern Verbosity verbosity; /* suppress msgs > this */
         } \
     } while (0)
 
+#define _printError(args...) printMsg(lvlError, args)
 #define printError(args...) printMsg(lvlError, args)
 #define printInfo(args...) printMsg(lvlInfo, args)
 #define printTalkative(args...) printMsg(lvlTalkative, args)

src/libutil/util.cc

@@ -1417,15 +1417,15 @@ string base64Decode(const string & s)
 }
 
 
-void callFailure(const std::function<void(std::exception_ptr exc)> & failure, std::exception_ptr exc)
+// void callFailure(const std::function<void(std::exception_ptr exc)> & failure, std::exception_ptr exc)
-{
+// {
-    try {
+//     try {
-        failure(exc);
+//         failure(exc);
-    } catch (std::exception & e) {
+//     } catch (std::exception & e) {
-        printError("uncaught exception: %s", e.what());
+//         printError("uncaught exception: %s", e.what());
-        abort();
+//         abort();
-    }
+//     }
-}
+// }
 
 
 static Sync<std::pair<unsigned short, unsigned short>> windowSize{{0, 0}};

src/nix-build/nix-build.cc

@@ -368,6 +368,8 @@ static void _main(int argc, char * * argv)
                 shell = drv->queryOutPath() + "/bin/bash";
 
             } catch (Error & e) {
+                // TODO: append error msg
+                logError(e.info());
                 printError("warning: %s; will use bash from your environment", e.what());
                 shell = "bash";
             }

src/nix-daemon/nix-daemon.cc

@@ -247,7 +247,8 @@ static void daemonLoop(char * * argv)
         } catch (Interrupted & e) {
             return;
         } catch (Error & e) {
-            printError("error processing connection: %1%", e.msg());
+            // TODO append error message
+            _printError("error processing connection: %1%", e.msg());
         }
     }
 }

src/nix-env/nix-env.cc

@@ -123,7 +123,11 @@ static void getAllExprs(EvalState & state,
             if (hasSuffix(attrName, ".nix"))
                 attrName = string(attrName, 0, attrName.size() - 4);
             if (!attrs.insert(attrName).second) {
-                printError(format("warning: name collision in input Nix expressions, skipping '%1%'") % path2);
+                logError(
+                    ErrorInfo { 
+                        .name = "Name collision",
+                        .hint = hintfmt("warning: name collision in input Nix expressions, skipping '%1%'", path2)
+                });
                 continue;
             }
             /* Load the expression on demand. */
@@ -860,7 +864,12 @@ static void queryJSON(Globals & globals, vector<DrvInfo> & elems)
             auto placeholder = metaObj.placeholder(j);
             Value * v = i.queryMeta(j);
             if (!v) {
-                printError("derivation '%s' has invalid meta attribute '%s'", i.queryName(), j);
+                logError(
+                    ErrorInfo { 
+                        .name = "Invalid meta attribute",
+                        .hint = hintfmt("derivation '%s' has invalid meta attribute '%s'",
+                            i.queryName(), j)
+                });
                 placeholder.write(nullptr);
             } else {
                 PathSet context;
@@ -1110,8 +1119,14 @@ static void opQuery(Globals & globals, Strings opFlags, Strings opArgs)
                             XMLAttrs attrs2;
                             attrs2["name"] = j;
                             Value * v = i.queryMeta(j);
-                            if (!v)
+                            if (!v) 
-                                printError("derivation '%s' has invalid meta attribute '%s'", i.queryName(), j);
+                                logError(
+                                    ErrorInfo { 
+                                        .name = "Invalid meta attribute",
+                                        .hint = hintfmt(
+                                            "derivation '%s' has invalid meta attribute '%s'",
+                                            i.queryName(), j)
+                                });
                             else {
                                 if (v->type == tString) {
                                     attrs2["type"] = "string";

src/nix-env/user-env.cc

@@ -146,7 +146,7 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
 
         Path lockTokenCur = optimisticLockProfile(profile);
         if (lockToken != lockTokenCur) {
-            printError(format("profile '%1%' changed while we were busy; restarting") % profile);
+            printError("profile '%1%' changed while we were busy; restarting", profile);
             return false;
         }
 

src/nix-store/nix-store.cc

@@ -726,9 +726,15 @@ static void opVerifyPath(Strings opFlags, Strings opArgs)
         store->narFromPath(path, sink);
         auto current = sink.finish();
         if (current.first != info->narHash) {
-            printError(
+            logError(
-                "path '%s' was modified! expected hash '%s', got '%s'",
+                ErrorInfo { 
-                store->printStorePath(path), info->narHash.to_string(), current.first.to_string());
+                    .name = "Hash match error",
+                    .hint = hintfmt(
+                        "path '%s' was modified! expected hash '%s', got '%s'",
+                        store->printStorePath(path),
+                        info->narHash.to_string(),
+                        current.first.to_string())
+            });
             status = 1;
         }
     }
@@ -835,7 +841,8 @@ static void opServe(Strings opFlags, Strings opArgs)
                             for (auto & p : willSubstitute) subs.emplace_back(p.clone());
                             store->buildPaths(subs);
                         } catch (Error & e) {
-                            printError("warning: %1%", e.msg());
+                            // logWarning(e.info())  TODO:  
+                            _printError("warning: %1%", e.msg());
                         }
                 }
 

src/nix/upgrade-nix.cc

@@ -64,7 +64,13 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
 
         if (dryRun) {
             stopProgressBar();
-            printError("would upgrade to version %s", version);
+            // TODO change to info?
+            logWarning(
+                ErrorInfo { 
+                    .name = "Version update",
+                    .hint = hintfmt("would upgrade to version %s", version)
+            });
+            // printError("would upgrade to version %s", version);
             return;
         }
 

src/nix/verify.cc

@@ -97,9 +97,15 @@ struct CmdVerify : StorePathsCommand
                     if (hash.first != info->narHash) {
                         corrupted++;
                         act2.result(resCorruptedPath, store->printStorePath(info->path));
-                        printError(
+                        logError(
-                            "path '%s' was modified! expected hash '%s', got '%s'",
+                            ErrorInfo { 
-                            store->printStorePath(info->path), info->narHash.to_string(), hash.first.to_string());
+                                .name = "Hash error - path modified",
+                                .hint = hintfmt(
+                                    "path '%s' was modified! expected hash '%s', got '%s'",
+                                    store->printStorePath(info->path),
+                                    info->narHash.to_string(),
+                                    hash.first.to_string())
+                            });
                     }
 
                 }
@@ -148,7 +154,13 @@ struct CmdVerify : StorePathsCommand
                     if (!good) {
                         untrusted++;
                         act2.result(resUntrustedPath, store->printStorePath(info->path));
-                        printError("path '%s' is untrusted", store->printStorePath(info->path));
+                        logError(
+                            ErrorInfo { 
+                                .name = "Untrusted path",
+                                .hint = hintfmt("path '%s' is untrusted",
+                                    store->printStorePath(info->path))
+                        });
+
                     }
 
                 }

src/resolve-system-dependencies/resolve-system-dependencies.cc

@@ -39,12 +39,20 @@ std::set<std::string> runResolver(const Path & filename)
         throw SysError("statting '%s'", filename);
 
     if (!S_ISREG(st.st_mode)) {
-        printError("file '%s' is not a regular file", filename);
+        logError(
+            ErrorInfo { 
+                .name = "Regular MACH file",
+                .hint = hintfmt("file '%s' is not a regular file", filename)
+        });
         return {};
     }
 
     if (st.st_size < sizeof(mach_header_64)) {
-        printError("file '%s' is too short for a MACH binary", filename);
+        logError(
+            ErrorInfo { 
+                .name = "File too short",
+                .hint = hintfmt("file '%s' is too short for a MACH binary", filename)
+        });
         return {};
     }
 
@@ -66,13 +74,21 @@ std::set<std::string> runResolver(const Path & filename)
             }
         }
         if (mach64_offset == 0) {
-            printError(format("Could not find any mach64 blobs in file '%1%', continuing...") % filename);
+            logError(
+                ErrorInfo { 
+                    .name = "No mach64 blobs",
+                    .hint = hintfmt("Could not find any mach64 blobs in file '%1%', continuing...", filename)
+            });
             return {};
         }
     } else if (magic == MH_MAGIC_64 || magic == MH_CIGAM_64) {
         mach64_offset = 0;
     } else {
-        printError(format("Object file has unknown magic number '%1%', skipping it...") % magic);
+        logError(
+            ErrorInfo { 
+                .name = "Magic number",
+                .hint = hintfmt("Object file has unknown magic number '%1%', skipping it...", magic)
+        });
         return {};
     }