From 5744dd548039b9a8666a414dcb66629322e5af21 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Tue, 25 Jul 2006 11:53:22 +0000 Subject: [PATCH] * Support the --attr / -A flag in nix-env as well. So now we can do, e.g., $ nix-env -i -A subversion xorg.xorgserver The main advantage over using symbolic names is that using attribute names is unambiguous and much, much faster. --- doc/manual/release-notes.xml | 3 +++ src/nix-env/help.txt | 9 +++++++++ src/nix-env/main.cc | 18 +++++++++++++++--- 3 files changed, 27 insertions(+), 3 deletions(-) diff --git a/doc/manual/release-notes.xml b/doc/manual/release-notes.xml index f5efdad85..ae773f525 100644 --- a/doc/manual/release-notes.xml +++ b/doc/manual/release-notes.xml @@ -69,6 +69,9 @@ irreversible. TODO: open files etc. are now used as roots of the garbage collector. + TODO: --attr / -a flags in + nix-env/nix-instantiate/nix-build. + diff --git a/src/nix-env/help.txt b/src/nix-env/help.txt index e83194774..3287bab28 100644 --- a/src/nix-env/help.txt +++ b/src/nix-env/help.txt @@ -28,6 +28,15 @@ Install / upgrade / uninstall flags: --dry-run: show what would be done, but don't do it +Installation sources: + + --from-expression / -E EXPR...: evaluate expressions specified on + the command line; expressions should be functions that take the + default Nix expression as an argument + --from-profile PROFILE NAMES...: copy named packages from PROFILE + --attr / -A ATTRS...: select attributes by name from the default Nix + expression + Upgrade flags: --lt: upgrade if the current version is older (default) diff --git a/src/nix-env/main.cc b/src/nix-env/main.cc index 400bb0d87..633c85b61 100644 --- a/src/nix-env/main.cc +++ b/src/nix-env/main.cc @@ -25,6 +25,7 @@ typedef enum { srcNixExprs, srcStorePaths, srcProfile, + srcAttrPath, srcUnknown } InstallSourceType; @@ -35,6 +36,7 @@ struct InstallSourceInfo Path nixExprPath; /* for srcNixExprDrvs, srcNixExprs */ Path profile; /* for srcProfile */ string systemFilter; /* for srcNixExprDrvs */ + string attrPath; /* srcAttrPath */ }; @@ -381,6 +383,14 @@ static void queryInstSources(EvalState & state, args, newestOnly); break; } + + case srcAttrPath: { + for (Strings::const_iterator i = args.begin(); + i != args.end(); ++i) + getDerivations(state, + parseExprFromFile(state, instSource.nixExprPath), elems, *i); + break; + } } } @@ -470,7 +480,7 @@ static void opInstall(Globals & globals, Strings opFlags, Strings opArgs) { if (opFlags.size() > 0) - throw UsageError(format("unknown flags `%1%'") % opFlags.front()); + throw UsageError(format("unknown flag `%1%'") % opFlags.front()); installDerivations(globals, opArgs, globals.profile); } @@ -606,7 +616,7 @@ static void opUninstall(Globals & globals, Strings opFlags, Strings opArgs) { if (opFlags.size() > 0) - throw UsageError(format("unknown flags `%1%'") % opFlags.front()); + throw UsageError(format("unknown flag `%1%'") % opFlags.front()); DrvNames drvNames = drvNamesFromArgs(opArgs); @@ -988,7 +998,7 @@ static void opDefaultExpr(Globals & globals, Strings opFlags, Strings opArgs) { if (opFlags.size() > 0) - throw UsageError(format("unknown flags `%1%'") % opFlags.front()); + throw UsageError(format("unknown flag `%1%'") % opFlags.front()); if (opArgs.size() != 1) throw UsageError(format("exactly one argument expected")); @@ -1040,6 +1050,8 @@ void run(Strings args) globals.instSource.type = srcProfile; globals.instSource.profile = needArg(i, args, arg); } + else if (arg == "--attr" || arg == "-A") + globals.instSource.type = srcAttrPath; else if (arg == "--uninstall" || arg == "-e") op = opUninstall; else if (arg == "--upgrade" || arg == "-u")