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* `nix-env --upgrade --eq': only upgrade if the old version is equal

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to the new version.  This is actually useful.
This commit is contained in:
Eelco Dolstra 2006-06-27 12:17:25 +00:00
parent f4a3a280db
commit a945fb7905
2 changed files with 5 additions and 2 deletions
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3
src/nix-env/help.txt
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@ -31,7 +31,8 @@ Install / upgrade / uninstall flags:
Upgrade flags:
--lt: upgrade if the current version is older (default)
--leq: upgrade if the current version is older or current
--leq: upgrade if the current version is older or equal
--eq: "upgrade" if the current version is equal
--always: upgrade regardless of current version
Query types:

4
src/nix-env/main.cc
View file

@ -476,7 +476,7 @@ static void opInstall(Globals & globals,
}
typedef enum { utLt, utLeq, utAlways } UpgradeType;
typedef enum { utLt, utLeq, utEq, utAlways } UpgradeType;
static void upgradeDerivations(Globals & globals,
@ -520,6 +520,7 @@ static void upgradeDerivations(Globals & globals,
int d = compareVersions(drvName.version, newName.version);
if (upgradeType == utLt && d < 0 ||
upgradeType == utLeq && d <= 0 ||
upgradeType == utEq && d == 0 ||
upgradeType == utAlways)
{
if ((bestElem == availElems.end() ||
@ -562,6 +563,7 @@ static void opUpgrade(Globals & globals,
i != opFlags.end(); ++i)
if (*i == "--lt") upgradeType = utLt;
else if (*i == "--leq") upgradeType = utLeq;
else if (*i == "--eq") upgradeType = utEq;
else if (*i == "--always") upgradeType = utAlways;
else throw UsageError(format("unknown flag `%1%'") % *i);