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Rename 'epoch' -> 'edition'

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Eelco Dolstra 2019-07-11 13:54:53 +02:00
parent 4205234f26
commit ad42a78469
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4 changed files with 23 additions and 17 deletions
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10
doc/flakes/design.md
View file

@ -65,7 +65,7 @@ Upcoming but not yet implemented:
NixOS configuration can be reproduced unambiguously from the top-level flake. NixOS configuration can be reproduced unambiguously from the top-level flake.
* Nix code can query flake metadata such as `commitHash` (the Git revision) or * Nix code can query flake metadata such as `commitHash` (the Git revision) or
`epoch` (the date of the last commit). This is useful for NixOS to compute `edition` (the date of the last commit). This is useful for NixOS to compute
the NixOS version string (which will be the revision of the top-level the NixOS version string (which will be the revision of the top-level
configuration flake, uniquely identifying the configuration). configuration flake, uniquely identifying the configuration).
@ -85,9 +85,9 @@ repository that provides a single package and a single NixOS module.
# The flake identifier. # The flake identifier.
name = "dwarffs"; name = "dwarffs";
# The epoch may be used in the future to determine how Nix # The edition may be used in the future to determine how Nix
# expressions inside this flake are to be parsed. # expressions inside this flake are to be parsed.
epoch = 201906; edition = 201906;
# Some other metadata. # Some other metadata.
description = "A filesystem that fetches DWARF debug info from the Internet on demand"; description = "A filesystem that fetches DWARF debug info from the Internet on demand";
@ -162,7 +162,7 @@ Similarly, a minimal `flake.nix` for Nixpkgs:
{ {
name = "nixpkgs"; name = "nixpkgs";
epoch = 201906; edition = 201906;
description = "A collection of packages for the Nix package manager"; description = "A collection of packages for the Nix package manager";
@ -449,7 +449,7 @@ flakes in (local) Git repositories.
{ {
name = "my-system"; name = "my-system";
epoch = 201906; edition = 201906;
inputs = inputs =
[ "nixpkgs/nixos-18.09" [ "nixpkgs/nixos-18.09"

24
src/libexpr/flake/flake.cc
View file

@ -223,16 +223,21 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef)
state.forceAttrs(vInfo); state.forceAttrs(vInfo);
auto sEpoch = state.symbols.create("epoch"); auto sEdition = state.symbols.create("edition");
auto sEpoch = state.symbols.create("epoch"); // FIXME: remove soon
if (auto epoch = vInfo.attrs->get(sEpoch)) { auto edition = vInfo.attrs->get(sEdition);
flake.epoch = state.forceInt(*(**epoch).value, *(**epoch).pos); if (!edition)
if (flake.epoch < 201906) edition = vInfo.attrs->get(sEpoch);
throw Error("flake '%s' has illegal epoch %d", flakeRef, flake.epoch);
if (flake.epoch > 201906) if (edition) {
throw Error("flake '%s' requires unsupported epoch %d; please upgrade Nix", flakeRef, flake.epoch); flake.edition = state.forceInt(*(**edition).value, *(**edition).pos);
if (flake.edition < 201906)
throw Error("flake '%s' has illegal edition %d", flakeRef, flake.edition);
if (flake.edition > 201906)
throw Error("flake '%s' requires unsupported edition %d; please upgrade Nix", flakeRef, flake.edition);
} else } else
throw Error("flake '%s' lacks attribute 'epoch'", flakeRef); throw Error("flake '%s' lacks attribute 'edition'", flakeRef);
if (auto name = vInfo.attrs->get(state.sName)) if (auto name = vInfo.attrs->get(state.sName))
flake.id = state.forceStringNoCtx(*(**name).value, *(**name).pos); flake.id = state.forceStringNoCtx(*(**name).value, *(**name).pos);
@ -271,7 +276,8 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef)
throw Error("flake '%s' lacks attribute 'outputs'", flakeRef); throw Error("flake '%s' lacks attribute 'outputs'", flakeRef);
for (auto & attr : *vInfo.attrs) { for (auto & attr : *vInfo.attrs) {
if (attr.name != sEpoch && if (attr.name != sEdition &&
attr.name != sEpoch &&
attr.name != state.sName && attr.name != state.sName &&
attr.name != state.sDescription && attr.name != state.sDescription &&
attr.name != sInputs && attr.name != sInputs &&

2
src/libexpr/flake/flake.hh
View file

@ -67,7 +67,7 @@ struct Flake
std::vector<FlakeRef> inputs; std::vector<FlakeRef> inputs;
std::map<FlakeAlias, FlakeRef> nonFlakeInputs; std::map<FlakeAlias, FlakeRef> nonFlakeInputs;
Value * vOutputs; // FIXME: gc Value * vOutputs; // FIXME: gc
unsigned int epoch; unsigned int edition;
Flake(const FlakeRef & origRef, const SourceInfo & sourceInfo) Flake(const FlakeRef & origRef, const SourceInfo & sourceInfo)
: originalRef(origRef), sourceInfo(sourceInfo) {}; : originalRef(origRef), sourceInfo(sourceInfo) {};

4
src/nix/flake.cc
View file

@ -105,7 +105,7 @@ static void printFlakeInfo(const Flake & flake)
{ {
std::cout << fmt("ID: %s\n", flake.id); std::cout << fmt("ID: %s\n", flake.id);
std::cout << fmt("Description: %s\n", flake.description); std::cout << fmt("Description: %s\n", flake.description);
std::cout << fmt("Epoch: %s\n", flake.epoch); std::cout << fmt("Edition: %s\n", flake.edition);
printSourceInfo(flake.sourceInfo); printSourceInfo(flake.sourceInfo);
} }
@ -114,7 +114,7 @@ static nlohmann::json flakeToJson(const Flake & flake)
nlohmann::json j; nlohmann::json j;
j["id"] = flake.id; j["id"] = flake.id;
j["description"] = flake.description; j["description"] = flake.description;
j["epoch"] = flake.epoch; j["edition"] = flake.edition;
sourceInfoToJson(flake.sourceInfo, j); sourceInfoToJson(flake.sourceInfo, j);
return j; return j;
} }