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* Before a build, show the disk space that the downloaded store paths

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will approximately require.
This commit is contained in:
Eelco Dolstra 2010-11-17 14:31:42 +00:00
parent 06699d4219
commit bdf089f463
11 changed files with 36 additions and 29 deletions
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13
src/libmain/shared.cc
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@ -54,25 +54,26 @@ void printGCWarning()
void printMissing(const PathSet & paths)
{
unsigned long long downloadSize;
unsigned long long downloadSize, narSize;
PathSet willBuild, willSubstitute, unknown;
queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize);
queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize, narSize);
if (!willBuild.empty()) {
printMsg(lvlInfo, format("the following derivations will be built:"));
printMsg(lvlInfo, format("these derivations will be built:"));
foreach (PathSet::iterator, i, willBuild)
printMsg(lvlInfo, format(" %1%") % *i);
}
if (!willSubstitute.empty()) {
printMsg(lvlInfo, format("the following paths will be downloaded/copied (%.2f MiB):") %
(downloadSize / (1024.0 * 1024.0)));
printMsg(lvlInfo, format("these paths will be downloaded/copied (%.2f MiB download, %.2f MiB unpacked):")
% (downloadSize / (1024.0 * 1024.0))
% (narSize / (1024.0 * 1024.0)));
foreach (PathSet::iterator, i, willSubstitute)
printMsg(lvlInfo, format(" %1%") % *i);
}
if (!unknown.empty()) {
printMsg(lvlInfo, format("don't know how to build the following paths%1%:")
printMsg(lvlInfo, format("don't know how to build these paths%1%:")
% (readOnlyMode ? " (may be caused by read-only store access)" : ""));
foreach (PathSet::iterator, i, unknown)
printMsg(lvlInfo, format(" %1%") % *i);