wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-06-26 20:01:15 +02:00
Code Activity

Fixed issue 65

Browse source 
lockfile updating
This commit is contained in:
Nick Van den Broeck 2019-05-01 11:38:48 +02:00
parent b531695331
commit d9ad3723d5
6 changed files with 90 additions and 75 deletions
Download patch file Download diff file Expand all files Collapse all files

91
src/libexpr/primops/flake.cc
View file

@ -289,8 +289,6 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef, bool impureIsAllowe
FlakeRef resolvedRef = sourceInfo.resolvedRef;
resolvedRef = sourceInfo.resolvedRef; // `resolvedRef` is now immutable
state.store->assertStorePath(sourceInfo.storePath);
if (state.allowedPaths)
@ -368,35 +366,59 @@ NonFlake getNonFlake(EvalState & state, const FlakeRef & flakeRef, FlakeAlias al
return nonFlake;
}
/* Given a flake reference, recursively fetch it and its
dependencies.
FIXME: this should return a graph of flakes.
*/
ResolvedFlake resolveFlake(EvalState & state, const FlakeRef & topRef,
RegistryAccess registryAccess, bool isTopFlake)
LockFile entryToLockFile(const LockFile::FlakeEntry & entry)
{
LockFile lockFile;
lockFile.flakeEntries = entry.flakeEntries;
lockFile.nonFlakeEntries = entry.nonFlakeEntries;
return lockFile;
}
ResolvedFlake resolveFlakeFromLockFile(EvalState & state, const FlakeRef & flakeRef, RegistryAccess registryAccess,
LockFile lockFile, bool isTopFlake = false)
{
bool allowRegistries = registryAccess == AllowRegistry || (registryAccess == AllowRegistryAtTop && isTopFlake);
Flake flake = getFlake(state, topRef, allowRegistries);
LockFile lockFile;
if (isTopFlake)
lockFile = readLockFile(flake.storePath + flake.resolvedRef.subdir + "/flake.lock"); // FIXME: symlink attack
Flake flake = getFlake(state, flakeRef, allowRegistries);
ResolvedFlake deps(flake);
for (auto & nonFlakeInfo : flake.nonFlakeRequires)
deps.nonFlakeDeps.push_back(getNonFlake(state, nonFlakeInfo.second, nonFlakeInfo.first));
for (auto & nonFlakeInfo : flake.nonFlakeRequires) {
FlakeRef ref = nonFlakeInfo.second;
auto i = lockFile.nonFlakeEntries.find(nonFlakeInfo.first);
if (i != lockFile.nonFlakeEntries.end()) ref = i->second.ref;
deps.nonFlakeDeps.push_back(getNonFlake(state, ref, nonFlakeInfo.first));
}
for (auto newFlakeRef : flake.requires) {
FlakeRef ref = newFlakeRef;
LockFile newLockFile;
auto i = lockFile.flakeEntries.find(newFlakeRef);
if (i != lockFile.flakeEntries.end()) newFlakeRef = i->second.ref;
// FIXME: propagate lockFile downwards
deps.flakeDeps.push_back(resolveFlake(state, newFlakeRef, registryAccess, false));
if (i != lockFile.flakeEntries.end()) { // Propagate lockFile downwards if possible
ref = i->second.ref;
newLockFile = entryToLockFile(i->second);
}
deps.flakeDeps.push_back(resolveFlakeFromLockFile(state, ref, registryAccess, newLockFile));
}
return deps;
}
/* Given a flake reference, recursively fetch it and its dependencies.
FIXME: this should return a graph of flakes.
*/
ResolvedFlake resolveFlake(EvalState & state, const FlakeRef & topRef, RegistryAccess registryAccess,
bool recreateLockFile)
{
bool allowRegistries = registryAccess == AllowRegistry || registryAccess == AllowRegistryAtTop;
Flake flake = getFlake(state, topRef, allowRegistries);
LockFile lockFile;
if (!recreateLockFile) // If recreateLockFile, start with an empty lockfile
lockFile = readLockFile(flake.storePath + "/flake.lock"); // FIXME: symlink attack
return resolveFlakeFromLockFile(state, topRef, registryAccess, lockFile, true);
}
LockFile::FlakeEntry dependenciesToFlakeEntry(const ResolvedFlake & resolvedFlake)
{
LockFile::FlakeEntry entry(resolvedFlake.flake.resolvedRef, resolvedFlake.flake.hash);
@ -410,31 +432,25 @@ LockFile::FlakeEntry dependenciesToFlakeEntry(const ResolvedFlake & resolvedFlak
return entry;
}
static LockFile makeLockFile(EvalState & evalState, FlakeRef & flakeRef)
static LockFile makeLockFile(EvalState & evalState, FlakeRef & flakeRef, bool recreateLockFile)
{
ResolvedFlake resFlake = resolveFlake(evalState, flakeRef, AllowRegistry);
LockFile::FlakeEntry entry = dependenciesToFlakeEntry(resFlake);
LockFile lockFile;
lockFile.flakeEntries = entry.flakeEntries;
lockFile.nonFlakeEntries = entry.nonFlakeEntries;
return lockFile;
ResolvedFlake resFlake = resolveFlake(evalState, flakeRef, AllowRegistry, recreateLockFile);
return entryToLockFile(dependenciesToFlakeEntry(resFlake));
}
void updateLockFile(EvalState & state, const FlakeUri & flakeUri)
void updateLockFile(EvalState & state, const FlakeUri & uri, bool recreateLockFile)
{
// FIXME: We are writing the lockfile to the store here! Very bad practice!
FlakeRef flakeRef = FlakeRef(flakeUri);
FlakeRef flakeRef = FlakeRef(uri);
auto lockFile = makeLockFile(state, flakeRef, recreateLockFile);
if (auto refData = std::get_if<FlakeRef::IsPath>(&flakeRef.data)) {
auto lockFile = makeLockFile(state, flakeRef);
writeLockFile(lockFile, refData->path + "/" + flakeRef.subdir + "/flake.lock");
writeLockFile(lockFile, refData->path + (flakeRef.subdir == "" ? "" : "/" + flakeRef.subdir) + "/flake.lock");
// Hack: Make sure that flake.lock is visible to Git. Otherwise,
// exportGit will fail to copy it to the Nix store.
runProgram("git", true,
{ "-C", refData->path, "add", "--intent-to-add",
(flakeRef.subdir == "" ? "" : flakeRef.subdir + "/") + "flake.lock" });
runProgram("git", true, { "-C", refData->path, "add",
(flakeRef.subdir == "" ? "" : flakeRef.subdir + "/") + "flake.lock" });
} else
throw Error("flakeUri %s can't be updated because it is not a path", flakeUri);
throw Error("flakeUri %s can't be updated because it is not a path", uri);
}
void callFlake(EvalState & state, const ResolvedFlake & resFlake, Value & v)
@ -485,16 +501,17 @@ void callFlake(EvalState & state, const ResolvedFlake & resFlake, Value & v)
// Return the `provides` of the top flake, while assigning to `v` the provides
// of the dependencies as well.
void makeFlakeValue(EvalState & state, const FlakeRef & flakeRef, RegistryAccess registryAccess, Value & v)
void makeFlakeValue(EvalState & state, const FlakeRef & flakeRef, RegistryAccess registryAccess, Value & v, bool recreateLockFile)
{
callFlake(state, resolveFlake(state, flakeRef, registryAccess), v);
callFlake(state, resolveFlake(state, flakeRef, registryAccess, recreateLockFile), v);
}
// This function is exposed to be used in nix files.
static void prim_getFlake(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
makeFlakeValue(state, state.forceStringNoCtx(*args[0], pos),
evalSettings.pureEval ? DisallowRegistry : AllowRegistryAtTop, v);
evalSettings.pureEval ? DisallowRegistry : AllowRegistryAtTop, v, false);
// `recreateLockFile == false` because this is the evaluation stage, which should be pure, and hence not recreate lockfiles.
}
static RegisterPrimOp r2("getFlake", 1, prim_getFlake);