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Merge 'nix flake {info,list-inputs}' into 'nix flake metadata'

Browse source 
Fixes #4613.
This commit is contained in:
Eelco Dolstra 2021-03-16 17:19:04 +01:00
parent 77f5d171e1
commit 66fa1c7375
4 changed files with 92 additions and 130 deletions
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23
src/nix/flake-list-inputs.md
View file

@ -1,23 +0,0 @@
R""(
# Examples
* Show the inputs of the `hydra` flake:
```console
# nix flake list-inputs github:NixOS/hydra
github:NixOS/hydra/bde8d81876dfc02143e5070e42c78d8f0d83d6f7
├───nix: github:NixOS/nix/79aa7d95183cbe6c0d786965f0dbff414fd1aa67
│ ├───lowdown-src: github:kristapsdz/lowdown/1705b4a26fbf065d9574dce47a94e8c7c79e052f
│ └───nixpkgs: github:NixOS/nixpkgs/ad0d20345219790533ebe06571f82ed6b034db31
└───nixpkgs follows input 'nix/nixpkgs'
```
# Description
This command shows the inputs of the flake specified by the flake
referenced *flake-url*. Since it prints the locked inputs that result
from generating or updating the lock file, this command essentially
displays the contents of the flake's lock file in human-readable form.
)""

27
src/nix/flake-info.md → src/nix/flake-metadata.md
View file

@ -5,19 +5,24 @@ R""(
* Show what `nixpkgs` resolves to:
```console
# nix flake info nixpkgs
Resolved URL: github:NixOS/nixpkgs
Locked URL: github:NixOS/nixpkgs/b67ba0bfcc714453cdeb8d713e35751eb8b4c8f4
Description: A collection of packages for the Nix package manager
Path: /nix/store/23qapccs6cfmwwrlq8kr41vz5vdmns3r-source
Revision: b67ba0bfcc714453cdeb8d713e35751eb8b4c8f4
Last modified: 2020-12-23 12:36:12
# nix flake metadata nixpkgs
Resolved URL: github:edolstra/dwarffs
Locked URL: github:edolstra/dwarffs/f691e2c991e75edb22836f1dbe632c40324215c5
Description: A filesystem that fetches DWARF debug info from the Internet on demand
Path: /nix/store/769s05vjydmc2lcf6b02az28wsa9ixh1-source
Revision: f691e2c991e75edb22836f1dbe632c40324215c5
Last modified: 2021-01-21 15:41:26
Inputs:
├───nix: github:NixOS/nix/6254b1f5d298ff73127d7b0f0da48f142bdc753c
│ ├───lowdown-src: github:kristapsdz/lowdown/1705b4a26fbf065d9574dce47a94e8c7c79e052f
│ └───nixpkgs: github:NixOS/nixpkgs/ad0d20345219790533ebe06571f82ed6b034db31
└───nixpkgs follows input 'nix/nixpkgs'
```
* Show information about `dwarffs` in JSON format:
```console
# nix flake info dwarffs --json | jq .
# nix flake metadata dwarffs --json | jq .
{
"description": "A filesystem that fetches DWARF debug info from the Internet on demand",
"lastModified": 1597153508,
@ -29,6 +34,7 @@ R""(
"rev": "d181d714fd36eb06f4992a1997cd5601e26db8f5",
"type": "github"
},
"locks": { ... },
"original": {
"id": "dwarffs",
"type": "indirect"
@ -75,6 +81,9 @@ data. This includes:
time of the commit of the locked flake; for tarball flakes, it's the
most recent timestamp of any file inside the tarball.
* `Inputs`: The flake inputs with their corresponding lock file
entries.
With `--json`, the output is a JSON object with the following fields:
* `original` and `originalUrl`: The flake reference specified by the
@ -96,4 +105,6 @@ With `--json`, the output is a JSON object with the following fields:
* `lastModified`: See `Last modified` above.
* `locks`: The contents of `flake.lock`.
)""

134
src/nix/flake.cc
View file

@ -43,12 +43,6 @@ public:
return parseFlakeRef(flakeUrl, absPath(".")); //FIXME
}
Flake getFlake()
{
auto evalState = getEvalState();
return flake::getFlake(*evalState, getFlakeRef(), lockFlags.useRegistries);
}
LockedFlake lockFlake()
{
return flake::lockFlake(*getEvalState(), getFlakeRef(), lockFlags);
@ -60,43 +54,6 @@ public:
}
};
static void printFlakeInfo(const Store & store, const Flake & flake)
{
logger->cout("Resolved URL: %s", flake.resolvedRef.to_string());
logger->cout("Locked URL: %s", flake.lockedRef.to_string());
if (flake.description)
logger->cout("Description: %s", *flake.description);
logger->cout("Path: %s", store.printStorePath(flake.sourceInfo->storePath));
if (auto rev = flake.lockedRef.input.getRev())
logger->cout("Revision: %s", rev->to_string(Base16, false));
if (auto revCount = flake.lockedRef.input.getRevCount())
logger->cout("Revisions: %s", *revCount);
if (auto lastModified = flake.lockedRef.input.getLastModified())
logger->cout("Last modified: %s",
std::put_time(std::localtime(&*lastModified), "%F %T"));
}
static nlohmann::json flakeToJSON(const Store & store, const Flake & flake)
{
nlohmann::json j;
if (flake.description)
j["description"] = *flake.description;
j["originalUrl"] = flake.originalRef.to_string();
j["original"] = fetchers::attrsToJSON(flake.originalRef.toAttrs());
j["resolvedUrl"] = flake.resolvedRef.to_string();
j["resolved"] = fetchers::attrsToJSON(flake.resolvedRef.toAttrs());
j["url"] = flake.lockedRef.to_string(); // FIXME: rename to lockedUrl
j["locked"] = fetchers::attrsToJSON(flake.lockedRef.toAttrs());
if (auto rev = flake.lockedRef.input.getRev())
j["revision"] = rev->to_string(Base16, false);
if (auto revCount = flake.lockedRef.input.getRevCount())
j["revCount"] = *revCount;
if (auto lastModified = flake.lockedRef.input.getLastModified())
j["lastModified"] = *lastModified;
j["path"] = store.printStorePath(flake.sourceInfo->storePath);
return j;
}
struct CmdFlakeUpdate : FlakeCommand
{
std::string description() override
@ -175,54 +132,72 @@ static void enumerateOutputs(EvalState & state, Value & vFlake,
callback(attr.name, *attr.value, *attr.pos);
}
struct CmdFlakeInfo : FlakeCommand, MixJSON
struct CmdFlakeMetadata : FlakeCommand, MixJSON
{
std::string description() override
{
return "list info about a given flake";
return "show flake metadata";
}
std::string doc() override
{
return
#include "flake-info.md"
#include "flake-metadata.md"
;
}
void run(nix::ref<nix::Store> store) override
{
auto flake = getFlake();
auto lockedFlake = lockFlake();
auto & flake = lockedFlake.flake;
if (json) {
auto json = flakeToJSON(*store, flake);
logger->cout("%s", json.dump());
} else
printFlakeInfo(*store, flake);
}
};
nlohmann::json j;
if (flake.description)
j["description"] = *flake.description;
j["originalUrl"] = flake.originalRef.to_string();
j["original"] = fetchers::attrsToJSON(flake.originalRef.toAttrs());
j["resolvedUrl"] = flake.resolvedRef.to_string();
j["resolved"] = fetchers::attrsToJSON(flake.resolvedRef.toAttrs());
j["url"] = flake.lockedRef.to_string(); // FIXME: rename to lockedUrl
j["locked"] = fetchers::attrsToJSON(flake.lockedRef.toAttrs());
if (auto rev = flake.lockedRef.input.getRev())
j["revision"] = rev->to_string(Base16, false);
if (auto revCount = flake.lockedRef.input.getRevCount())
j["revCount"] = *revCount;
if (auto lastModified = flake.lockedRef.input.getLastModified())
j["lastModified"] = *lastModified;
j["path"] = store->printStorePath(flake.sourceInfo->storePath);
j["locks"] = lockedFlake.lockFile.toJSON();
logger->cout("%s", j.dump());
} else {
logger->cout(
ANSI_BOLD "Resolved URL:" ANSI_NORMAL " %s",
flake.resolvedRef.to_string());
logger->cout(
ANSI_BOLD "Locked URL:" ANSI_NORMAL " %s",
flake.lockedRef.to_string());
if (flake.description)
logger->cout(
ANSI_BOLD "Description:" ANSI_NORMAL " %s",
*flake.description);
logger->cout(
ANSI_BOLD "Path:" ANSI_NORMAL " %s",
store->printStorePath(flake.sourceInfo->storePath));
if (auto rev = flake.lockedRef.input.getRev())
logger->cout(
ANSI_BOLD "Revision:" ANSI_NORMAL " %s",
rev->to_string(Base16, false));
if (auto revCount = flake.lockedRef.input.getRevCount())
logger->cout(
ANSI_BOLD "Revisions:" ANSI_NORMAL " %s",
*revCount);
if (auto lastModified = flake.lockedRef.input.getLastModified())
logger->cout(
ANSI_BOLD "Last modified:" ANSI_NORMAL " %s",
std::put_time(std::localtime(&*lastModified), "%F %T"));
struct CmdFlakeListInputs : FlakeCommand, MixJSON
{
std::string description() override
{
return "list flake inputs";
}
std::string doc() override
{
return
#include "flake-list-inputs.md"
;
}
void run(nix::ref<nix::Store> store) override
{
auto flake = lockFlake();
if (json)
logger->cout("%s", flake.lockFile.toJSON());
else {
logger->cout("%s", flake.flake.lockedRef);
logger->cout(ANSI_BOLD "Inputs:" ANSI_NORMAL);
std::unordered_set<std::shared_ptr<Node>> visited;
@ -236,7 +211,7 @@ struct CmdFlakeListInputs : FlakeCommand, MixJSON
if (auto lockedNode = std::get_if<0>(&input.second)) {
logger->cout("%s" ANSI_BOLD "%s" ANSI_NORMAL ": %s",
prefix + (last ? treeLast : treeConn), input.first,
*lockedNode ? (*lockedNode)->lockedRef : flake.flake.lockedRef);
*lockedNode ? (*lockedNode)->lockedRef : flake.lockedRef);
bool firstVisit = visited.insert(*lockedNode).second;
@ -249,8 +224,8 @@ struct CmdFlakeListInputs : FlakeCommand, MixJSON
}
};
visited.insert(flake.lockFile.root);
recurse(*flake.lockFile.root, "");
visited.insert(lockedFlake.lockFile.root);
recurse(*lockedFlake.lockFile.root, "");
}
}
};
@ -1048,8 +1023,7 @@ struct CmdFlake : NixMultiCommand
: MultiCommand({
{"update", []() { return make_ref<CmdFlakeUpdate>(); }},
{"lock", []() { return make_ref<CmdFlakeLock>(); }},
{"info", []() { return make_ref<CmdFlakeInfo>(); }},
{"list-inputs", []() { return make_ref<CmdFlakeListInputs>(); }},
{"metadata", []() { return make_ref<CmdFlakeMetadata>(); }},
{"check", []() { return make_ref<CmdFlakeCheck>(); }},
{"init", []() { return make_ref<CmdFlakeInit>(); }},
{"new", []() { return make_ref<CmdFlakeNew>(); }},

38
tests/flakes.sh
View file

@ -164,16 +164,17 @@ EOF
# Test 'nix flake list'.
[[ $(nix registry list | wc -l) == 7 ]]
# Test 'nix flake info'.
nix flake info flake1 | grep -q 'URL: .*flake1.*'
# Test 'nix flake metadata'.
nix flake metadata flake1
nix flake metadata flake1 | grep -q 'Locked URL:.*flake1.*'
# Test 'nix flake info' on a local flake.
(cd $flake1Dir && nix flake info) | grep -q 'URL: .*flake1.*'
(cd $flake1Dir && nix flake info .) | grep -q 'URL: .*flake1.*'
nix flake info $flake1Dir | grep -q 'URL: .*flake1.*'
# Test 'nix flake metadata' on a local flake.
(cd $flake1Dir && nix flake metadata) | grep -q 'URL:.*flake1.*'
(cd $flake1Dir && nix flake metadata .) | grep -q 'URL:.*flake1.*'
nix flake metadata $flake1Dir | grep -q 'URL:.*flake1.*'
# Test 'nix flake info --json'.
json=$(nix flake info flake1 --json | jq .)
# Test 'nix flake metadata --json'.
json=$(nix flake metadata flake1 --json | jq .)
[[ $(echo "$json" | jq -r .description) = 'Bla bla' ]]
[[ -d $(echo "$json" | jq -r .path) ]]
[[ $(echo "$json" | jq -r .lastModified) = $(git -C $flake1Dir log -n1 --format=%ct) ]]
@ -181,7 +182,7 @@ hash1=$(echo "$json" | jq -r .revision)
echo -n '# foo' >> $flake1Dir/flake.nix
git -C $flake1Dir commit -a -m 'Foo'
hash2=$(nix flake info flake1 --json --refresh | jq -r .revision)
hash2=$(nix flake metadata flake1 --json --refresh | jq -r .revision)
[[ $hash1 != $hash2 ]]
# Test 'nix build' on a flake.
@ -630,7 +631,7 @@ hg commit --config ui.username=foobar@example.org $flake5Dir -m 'Initial commit'
nix build -o $TEST_ROOT/result hg+file://$flake5Dir
[[ -e $TEST_ROOT/result/hello ]]
(! nix flake info --json hg+file://$flake5Dir | jq -e -r .revision)
(! nix flake metadata --json hg+file://$flake5Dir | jq -e -r .revision)
nix eval hg+file://$flake5Dir#expr
@ -638,13 +639,13 @@ nix eval hg+file://$flake5Dir#expr
(! nix eval hg+file://$flake5Dir#expr --no-allow-dirty)
(! nix flake info --json hg+file://$flake5Dir | jq -e -r .revision)
(! nix flake metadata --json hg+file://$flake5Dir | jq -e -r .revision)
hg commit --config ui.username=foobar@example.org $flake5Dir -m 'Add lock file'
nix flake info --json hg+file://$flake5Dir --refresh | jq -e -r .revision
nix flake info --json hg+file://$flake5Dir
[[ $(nix flake info --json hg+file://$flake5Dir | jq -e -r .revCount) = 1 ]]
nix flake metadata --json hg+file://$flake5Dir --refresh | jq -e -r .revision
nix flake metadata --json hg+file://$flake5Dir
[[ $(nix flake metadata --json hg+file://$flake5Dir | jq -e -r .revCount) = 1 ]]
nix build -o $TEST_ROOT/result hg+file://$flake5Dir --no-registries --no-allow-dirty
@ -654,7 +655,7 @@ tar cfz $TEST_ROOT/flake.tar.gz -C $TEST_ROOT --exclude .hg flake5
nix build -o $TEST_ROOT/result file://$TEST_ROOT/flake.tar.gz
# Building with a tarball URL containing a SRI hash should also work.
url=$(nix flake info --json file://$TEST_ROOT/flake.tar.gz | jq -r .url)
url=$(nix flake metadata --json file://$TEST_ROOT/flake.tar.gz | jq -r .url)
[[ $url =~ sha256- ]]
nix build -o $TEST_ROOT/result $url
@ -680,9 +681,8 @@ nix flake lock $flake3Dir
nix flake lock $flake3Dir --update-input flake2/flake1
[[ $(jq -r .nodes.flake1_2.locked.rev $flake3Dir/flake.lock) =~ $hash2 ]]
# Test 'nix flake list-inputs'.
[[ $(nix flake list-inputs $flake3Dir | wc -l) == 5 ]]
nix flake list-inputs $flake3Dir --json | jq .
# Test 'nix flake metadata --json'.
nix flake metadata $flake3Dir --json | jq .
# Test circular flake dependencies.
cat > $flakeA/flake.nix <<EOF
@ -721,4 +721,4 @@ git -C $flakeB commit -a -m 'Foo'
[[ $(nix eval --update-input b $flakeA#foo) = 1912 ]]
# Test list-inputs with circular dependencies
nix flake list-inputs $flakeA
nix flake metadata $flakeA