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Move calling flakes into a Nix helper function (call-flake.nix)

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This commit is contained in:
Eelco Dolstra 2020-03-09 15:28:41 +01:00
parent 5a1514adb8
commit 73769b28e3
9 changed files with 93 additions and 154 deletions
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52
src/libexpr/primops/fetchTree.cc
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@ -4,11 +4,45 @@
#include "fetchers/fetchers.hh"
#include "fetchers/registry.hh"
#include <ctime>
#include <iomanip>
namespace nix {
void emitTreeAttrs(
EvalState & state,
const fetchers::Tree & tree,
std::shared_ptr<const fetchers::Input> input,
Value & v)
{
state.mkAttrs(v, 8);
auto storePath = state.store->printStorePath(tree.storePath);
mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
assert(tree.info.narHash);
mkString(*state.allocAttr(v, state.symbols.create("narHash")),
tree.info.narHash.to_string(SRI));
if (input->getRev()) {
mkString(*state.allocAttr(v, state.symbols.create("rev")), input->getRev()->gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), input->getRev()->gitShortRev());
}
if (tree.info.revCount)
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *tree.info.revCount);
if (tree.info.lastModified)
mkString(*state.allocAttr(v, state.symbols.create("lastModified")),
fmt("%s", std::put_time(std::gmtime(&*tree.info.lastModified), "%Y%m%d%H%M%S")));
v.attrs->sort();
}
static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
settings.requireExperimentalFeature("fetch-tree");
settings.requireExperimentalFeature("flakes");
std::shared_ptr<const fetchers::Input> input;
PathSet context;
@ -25,7 +59,8 @@ static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, V
if (attr.value->type == tString)
attrs.emplace(attr.name, attr.value->string.s);
else
throw Error("unsupported attribute type");
throw TypeError("fetchTree argument '%s' is %s while a string is expected",
attr.name, showType(*attr.value));
}
if (!attrs.count("type"))
@ -43,19 +78,10 @@ static void prim_fetchTree(EvalState & state, const Pos & pos, Value * * args, V
auto [tree, input2] = input->fetchTree(state.store);
state.mkAttrs(v, 8);
auto storePath = state.store->printStorePath(tree.storePath);
mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
if (input2->getRev()) {
mkString(*state.allocAttr(v, state.symbols.create("rev")), input2->getRev()->gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), input2->getRev()->gitShortRev());
}
if (tree.info.revCount)
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *tree.info.revCount);
v.attrs->sort();
if (state.allowedPaths)
state.allowedPaths->insert(tree.actualPath);
emitTreeAttrs(state, tree, input2, v);
}
static RegisterPrimOp r("fetchTree", 1, prim_fetchTree);