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* When obtaining derivations from Nix expressions, ignore all

Browse source 
expressions that cause an assertion failure (like `assert system ==
  "i686-linux"').  This allows all-packages.nix in Nixpkgs to be used
  on all platforms, even if some Nix expressions don't work on all
  platforms.

  Not sure if this is a good idea; it's a bit hacky.  In particular,
  due to laziness some derivations might appear in `nix-env -qa' but
  disappear in `nix-env -qas' or `nix-env -i'.

  Commit 5000!
This commit is contained in:
Eelco Dolstra 2006-03-08 16:03:58 +00:00
parent 9088dee9e2
commit 6dca5c9099
3 changed files with 98 additions and 70 deletions
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78
src/nix-env/main.cc
View file

@ -762,47 +762,53 @@ static void opQuery(Globals & globals,
for (vector<DrvInfo>::iterator i = elems2.begin();
i != elems2.end(); ++i)
{
Strings columns;
try {
Strings columns;
if (printStatus) {
Substitutes subs = querySubstitutes(noTxn, i->queryOutPath(globals.state));
columns.push_back(
(string) (installed.find(i->queryOutPath(globals.state))
!= installed.end() ? "I" : "-")
+ (isValidPath(i->queryOutPath(globals.state)) ? "P" : "-")
+ (subs.size() > 0 ? "S" : "-"));
}
if (printName) columns.push_back(i->name);
if (compareVersions) {
/* Compare this element against the versions of the same
named packages in either the set of available elements,
or the set of installed elements. !!! This is O(N *
M), should be O(N * lg M). */
string version;
VersionDiff diff = compareVersionAgainstSet(*i, otherElems, version);
char ch;
switch (diff) {
case cvLess: ch = '>'; break;
case cvEqual: ch = '='; break;
case cvGreater: ch = '<'; break;
case cvUnavail: ch = '-'; break;
default: abort();
if (printStatus) {
Substitutes subs = querySubstitutes(noTxn, i->queryOutPath(globals.state));
columns.push_back(
(string) (installed.find(i->queryOutPath(globals.state))
!= installed.end() ? "I" : "-")
+ (isValidPath(i->queryOutPath(globals.state)) ? "P" : "-")
+ (subs.size() > 0 ? "S" : "-"));
}
string column = (string) "" + ch + " " + version;
if (diff == cvGreater) column = colorString(column);
columns.push_back(column);
}
if (printSystem) columns.push_back(i->system);
if (printName) columns.push_back(i->name);
if (printDrvPath) columns.push_back(
i->queryDrvPath(globals.state) == ""
? "-" : i->queryDrvPath(globals.state));
if (compareVersions) {
/* Compare this element against the versions of the
same named packages in either the set of available
elements, or the set of installed elements. !!!
This is O(N * M), should be O(N * lg M). */
string version;
VersionDiff diff = compareVersionAgainstSet(*i, otherElems, version);
char ch;
switch (diff) {
case cvLess: ch = '>'; break;
case cvEqual: ch = '='; break;
case cvGreater: ch = '<'; break;
case cvUnavail: ch = '-'; break;
default: abort();
}
string column = (string) "" + ch + " " + version;
if (diff == cvGreater) column = colorString(column);
columns.push_back(column);
}
if (printSystem) columns.push_back(i->system);
if (printDrvPath) columns.push_back(
i->queryDrvPath(globals.state) == ""
? "-" : i->queryDrvPath(globals.state));
if (printOutPath) columns.push_back(i->queryOutPath(globals.state));
table.push_back(columns);
if (printOutPath) columns.push_back(i->queryOutPath(globals.state));
table.push_back(columns);
}
catch (AssertionError & e) {
}
}
printTable(table);