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Partially integrated state components (startscripts) into nix-env

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This commit is contained in:
Wouter den Breejen 2007-08-10 15:39:02 +00:00
parent 13f321e397
commit 7424d72098
17 changed files with 241 additions and 122 deletions
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38
src/libexpr/get-drvs.cc
View file

@ -35,6 +35,30 @@ string DrvInfo::queryOutPath(EvalState & state) const
return outPath;
}
string DrvInfo::queryStateIdentifier(EvalState & state) const
{
if (stateIdentifier == "") {
ATermMap attrs2 = *attrs;
for (ATermMap::const_iterator i = attrs2.begin(); i != attrs2.end(); ++i) {
string key = (string)aterm2String(i->key); //cast because aterm2String returns a char*
//printMsg(lvlError, format("ATTR2: '%1%'") % key);
if(key == "stateIdentifier"){
PathSet context;
string value = coerceToString(state, i->value, context);
(string &) stateIdentifier = value;
}
}
//If still empty
if (trim(stateIdentifier) == "")
(string &) stateIdentifier = "__NOSTATE__";
}
return stateIdentifier;
}
MetaInfo DrvInfo::queryMetaInfo(EvalState & state) const
{
@ -93,20 +117,23 @@ static bool getDerivation(EvalState & state, Expr e,
boost::shared_ptr<ATermMap> attrs(new ATermMap());
queryAllAttrs(e, *attrs, false);
Expr a = attrs->get(toATerm("type"));
if (!a || evalStringNoCtx(state, a) != "derivation") return true;
if (!a || evalStringNoCtx(state, a) != "derivation")
return true;
/* Remove spurious duplicates (e.g., an attribute set like
`rec { x = derivation {...}; y = x;}'. */
if (doneExprs.find(e) != doneExprs.end()) return false;
if (doneExprs.find(e) != doneExprs.end())
return false;
doneExprs.insert(e);
DrvInfo drv;
a = attrs->get(toATerm("name"));
/* !!! We really would like to have a decent back trace here. */
if (!a) throw TypeError("derivation name missing");
if (!a)
throw TypeError("derivation name missing");
drv.name = evalStringNoCtx(state, a);
a = attrs->get(toATerm("system"));
@ -133,7 +160,8 @@ bool getDerivation(EvalState & state, Expr e, DrvInfo & drv)
Exprs doneExprs;
DrvInfos drvs;
getDerivation(state, e, "", drvs, doneExprs);
if (drvs.size() != 1) return false;
if (drvs.size() != 1)
return false;
drv = drvs.front();
return true;
}

7
src/libexpr/get-drvs.hh
View file

@ -20,6 +20,7 @@ struct DrvInfo
private:
string drvPath;
string outPath;
string stateIdentifier;
public:
string name;
@ -33,6 +34,7 @@ public:
string queryDrvPath(EvalState & state) const;
string queryOutPath(EvalState & state) const;
string queryStateIdentifier(EvalState & state) const;
MetaInfo queryMetaInfo(EvalState & state) const;
void setDrvPath(const string & s)
@ -45,6 +47,11 @@ public:
outPath = s;
}
void setStateIdentifier(const string & s)
{
stateIdentifier = s;
}
void setMetaInfo(const MetaInfo & meta);
};