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Remove TreeInfo

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The attributes previously stored in TreeInfo (narHash, revCount,
lastModified) are now stored in Input. This makes it less arbitrary
what attributes are stored where.

As a result, the lock file format has changed. An entry like

    "info": {
      "lastModified": 1585405475,
      "narHash": "sha256-bESW0n4KgPmZ0luxvwJ+UyATrC6iIltVCsGdLiphVeE="
    },
    "locked": {
      "owner": "NixOS",
      "repo": "nixpkgs",
      "rev": "b88ff468e9850410070d4e0ccd68c7011f15b2be",
      "type": "github"
    },

is now stored as

    "locked": {
      "owner": "NixOS",
      "repo": "nixpkgs",
      "rev": "b88ff468e9850410070d4e0ccd68c7011f15b2be",
      "type": "github",
      "lastModified": 1585405475,
      "narHash": "sha256-bESW0n4KgPmZ0luxvwJ+UyATrC6iIltVCsGdLiphVeE="
    },

The 'Input' class is now a dumb set of attributes. All the fetcher
implementations subclass InputScheme, not Input. This simplifies the
API.

Also, fix substitution of flake inputs. This was broken since lazy
flake fetching started using fetchTree internally.
This commit is contained in:
Eelco Dolstra 2020-05-30 00:44:11 +02:00
parent 5633c0975b
commit 950b46821f
30 changed files with 963 additions and 1145 deletions
Download patch file Download diff file Expand all files Collapse all files

22
src/libexpr/flake/flakeref.cc
View file

@ -15,7 +15,7 @@ const static std::string subDirRegex = subDirElemRegex + "(?:/" + subDirElemRege
std::string FlakeRef::to_string() const
{
auto url = input->toURL();
auto url = input.toURL();
if (subdir != "")
url.query.insert_or_assign("dir", subdir);
return url.to_string();
@ -23,7 +23,7 @@ std::string FlakeRef::to_string() const
fetchers::Attrs FlakeRef::toAttrs() const
{
auto attrs = input->toAttrs();
auto attrs = input.toAttrs();
if (subdir != "")
attrs.emplace("dir", subdir);
return attrs;
@ -37,13 +37,13 @@ std::ostream & operator << (std::ostream & str, const FlakeRef & flakeRef)
bool FlakeRef::operator ==(const FlakeRef & other) const
{
return *input == *other.input && subdir == other.subdir;
return input == other.input && subdir == other.subdir;
}
FlakeRef FlakeRef::resolve(ref<Store> store) const
{
auto [input2, extraAttrs] = lookupInRegistries(store, input);
return FlakeRef(input2, fetchers::maybeGetStrAttr(extraAttrs, "dir").value_or(subdir));
return FlakeRef(std::move(input2), fetchers::maybeGetStrAttr(extraAttrs, "dir").value_or(subdir));
}
FlakeRef parseFlakeRef(
@ -98,7 +98,7 @@ std::pair<FlakeRef, std::string> parseFlakeRefWithFragment(
};
return std::make_pair(
FlakeRef(inputFromURL(parsedURL), ""),
FlakeRef(Input::fromURL(parsedURL), ""),
percentDecode(std::string(match[6])));
}
@ -143,7 +143,7 @@ std::pair<FlakeRef, std::string> parseFlakeRefWithFragment(
}
return std::make_pair(
FlakeRef(inputFromURL(parsedURL), get(parsedURL.query, "dir").value_or("")),
FlakeRef(Input::fromURL(parsedURL), get(parsedURL.query, "dir").value_or("")),
fragment);
}
@ -155,7 +155,7 @@ std::pair<FlakeRef, std::string> parseFlakeRefWithFragment(
attrs.insert_or_assign("type", "path");
attrs.insert_or_assign("path", path);
return std::make_pair(FlakeRef(inputFromAttrs(attrs), ""), fragment);
return std::make_pair(FlakeRef(Input::fromAttrs(std::move(attrs)), ""), fragment);
}
else {
@ -163,7 +163,7 @@ std::pair<FlakeRef, std::string> parseFlakeRefWithFragment(
std::string fragment;
std::swap(fragment, parsedURL.fragment);
return std::make_pair(
FlakeRef(inputFromURL(parsedURL), get(parsedURL.query, "dir").value_or("")),
FlakeRef(Input::fromURL(parsedURL), get(parsedURL.query, "dir").value_or("")),
fragment);
}
}
@ -183,14 +183,14 @@ FlakeRef FlakeRef::fromAttrs(const fetchers::Attrs & attrs)
auto attrs2(attrs);
attrs2.erase("dir");
return FlakeRef(
fetchers::inputFromAttrs(attrs2),
fetchers::Input::fromAttrs(std::move(attrs2)),
fetchers::maybeGetStrAttr(attrs, "dir").value_or(""));
}
std::pair<fetchers::Tree, FlakeRef> FlakeRef::fetchTree(ref<Store> store) const
{
auto [tree, lockedInput] = input->fetchTree(store);
return {std::move(tree), FlakeRef(lockedInput, subdir)};
auto [tree, lockedInput] = input.fetch(store);
return {std::move(tree), FlakeRef(std::move(lockedInput), subdir)};
}
}