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* Give unpacked channels more sensible names than 0, 1, ... They now

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get the basename of the channel URL (e.g., nixpkgs-unstable).  The
  top-level Nix expression of the channel is now an attribute set, the
  attributes of which are the individual channels (e.g.,
  {nixpkgs_unstable = ...; strategoxt_unstable = ...}).  This makes
  attribute paths ("nix-env -qaA" and "nix-env -iA") more sensible,
  e.g., "nix-env -iA nixpkgs_unstable.subversion".
This commit is contained in:
Eelco Dolstra 2007-05-01 23:16:38 +00:00
parent a9d15d4f43
commit 93aefd9fc0
5 changed files with 43 additions and 20 deletions
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15
src/libexpr/get-drvs.cc
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@ -170,12 +170,21 @@ static void getDerivations(EvalState & state, Expr e,
if (matchAttrs(e, es)) {
ATermMap drvMap(ATgetLength(es));
queryAllAttrs(e, drvMap);
/* !!! undocumented hackery to support
corepkgs/channels/unpack.sh. */
Expr e2 = drvMap.get(toATerm("_combineChannels"));
bool combineChannels = e2 && evalBool(state, e2);
for (ATermMap::const_iterator i = drvMap.begin(); i != drvMap.end(); ++i) {
startNest(nest, lvlDebug,
format("evaluating attribute `%1%'") % aterm2String(i->key));
string pathPrefix2 = addToPath(pathPrefix, aterm2String(i->key));
if (getDerivation(state, i->value, pathPrefix2, drvs, doneExprs)) {
if (combineChannels) {
if (((string) aterm2String(i->key)) != "_combineChannels")
getDerivations(state, i->value, pathPrefix2, autoArgs, drvs, doneExprs);
}
else if (getDerivation(state, i->value, pathPrefix2, drvs, doneExprs)) {
/* If the value of this attribute is itself an
attribute set, should we recurse into it? => Only
if it has a `recurseForDerivations = true'
@ -185,8 +194,8 @@ static void getDerivations(EvalState & state, Expr e,
if (matchAttrs(e, es)) {
ATermMap attrs(ATgetLength(es));
queryAllAttrs(e, attrs, false);
Expr e2 = attrs.get(toATerm("recurseForDerivations"));
if (e2 && evalBool(state, e2))
if (((e2 = attrs.get(toATerm("recurseForDerivations")))
&& evalBool(state, e2)))
getDerivations(state, e, pathPrefix2, autoArgs, drvs, doneExprs);
}
}