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* `nix-env (-i|-u) --dry-run' now shows exactly which missing paths

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will be built or substituted.
This commit is contained in:
Eelco Dolstra 2006-03-06 11:21:15 +00:00
parent 7ba1fd2029
commit c8bfb11b34
9 changed files with 120 additions and 22 deletions
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38
src/nix-env/main.cc
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@ -2,6 +2,7 @@
#include "names.hh"
#include "globals.hh"
#include "build.hh"
#include "misc.hh"
#include "gc.hh"
#include "shared.hh"
#include "parser.hh"
@ -383,6 +384,33 @@ static void queryInstSources(EvalState & state,
}
static void printMissing(EvalState & state, const DrvInfos & elems)
{
PathSet targets, willBuild, willSubstitute;
for (DrvInfos::const_iterator i = elems.begin(); i != elems.end(); ++i) {
Path drvPath = i->queryDrvPath(state);
if (drvPath != "")
targets.insert(drvPath);
else
targets.insert(i->queryOutPath(state));
}
queryMissing(targets, willBuild, willSubstitute);
if (!willBuild.empty()) {
printMsg(lvlInfo, format("the following derivations will be built:"));
for (PathSet::iterator i = willBuild.begin(); i != willBuild.end(); ++i)
printMsg(lvlInfo, format(" %1%") % *i);
}
if (!willSubstitute.empty()) {
printMsg(lvlInfo, format("the following paths will be substituted:"));
for (PathSet::iterator i = willSubstitute.begin(); i != willSubstitute.end(); ++i)
printMsg(lvlInfo, format(" %1%") % *i);
}
}
static void installDerivations(Globals & globals,
const Strings & args, const Path & profile)
{
@ -417,7 +445,10 @@ static void installDerivations(Globals & globals,
printMsg(lvlInfo,
format("installing `%1%'") % i->name);
if (globals.dryRun) return;
if (globals.dryRun) {
printMissing(globals.state, newElems);
return;
}
createUserEnv(globals.state, allElems,
profile, globals.keepDerivations);
@ -500,7 +531,10 @@ static void upgradeDerivations(Globals & globals,
} else newElems.push_back(*i);
}
if (globals.dryRun) return;
if (globals.dryRun) {
printMissing(globals.state, newElems);
return;
}
createUserEnv(globals.state, newElems,
profile, globals.keepDerivations);