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Improve registry and git based dependencies #5

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Improve registry and git based dependencies #5

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e99c059
Add registry independence
Mifom Dec 18, 2021
6e48b54
Get registries by attr
Mifom Dec 18, 2021
149164a
Add allRefs to git deps
Mifom Dec 18, 2021
eccab1a
Improve git deps parsing
Mifom Mar 31, 2022
5316f01
Inner crates in git repos parsing
Mifom Apr 4, 2022
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58 changes: 45 additions & 13 deletions flake.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -4,24 +4,40 @@
outputs = { self }: rec {

builders.importCargo =
{ lockFile, pkgs }:
let lockFile' = builtins.fromTOML (builtins.readFile lockFile); in
rec {
{ lockFile, pkgs, registries ? {} }:
let
lockFile' = builtins.fromTOML (builtins.readFile lockFile);
registriesUrl = {
"https://github.com/rust-lang/crates.io-index" = "https://crates.io/api/v1/crates/";
} // registries;
in rec {

# Fetch and unpack the crates specified in the lock file.
unpackedCrates = map
(pkg:

let
isGit = builtins.match ''git\+(.*)\?rev=([0-9a-f]+)(#.*)?'' pkg.source;
registry = "registry+https://github.com/rust-lang/crates.io-index";
gitRegexp = x: builtins.match "git\+(.*)\?((branch=(.+)#([0-9a-f]+)(#.*)?)|(rev=([0-9a-f]+)(#.*)?))" x;
isGit = let gitArr = gitRegexp pkg.source; in
if isNull gitArr then
null
else
let url_ = builtins.elemAt gitArr 0;
url = builtins.substring 1 (builtins.stringLength url_ - 2) url_;
rev4 = builtins.elemAt gitArr 3;
rev5 = builtins.elemAt gitArr 4;
rev8 = builtins.elemAt gitArr 7;
in if isNull rev4 then [url null rev8] else [url rev4 rev5];
isRegistry = builtins.match ''registry\+(.*)'' pkg.source;
in

if pkg.source == registry then
if isRegistry != null then
let
sha256 = pkg.checksum or lockFile'.metadata."checksum ${pkg.name} ${pkg.version} (${registry})";
tarball = import <nix/fetchurl.nix> {
url = "https://crates.io/api/v1/crates/${pkg.name}/${pkg.version}/download";
registry = builtins.elemAt isRegistry 0;
regUrl = registriesUrl."${registry}" or (throw ''Unsupported registry: ${registry}. Add {"${registry}" = <registry-dl>; ... } to registries'');
sha256 = pkg.checksum or lockFile'.metadata."checksum ${pkg.name} ${pkg.version} (${pkg.source})";
tarball = builtins.fetchurl {
url = "${regUrl}/${pkg.name}/${pkg.version}/download";
inherit sha256;
};
in pkgs.runCommand "${pkg.name}-${pkg.version}" {}
Expand All @@ -36,14 +52,19 @@

else if isGit != null then
let
rev = builtins.elemAt isGit 1;
rev = builtins.elemAt isGit 2;
branch = builtins.elemAt isGit 1;
url = builtins.elemAt isGit 0;
tree = builtins.fetchGit { inherit url rev; };
tree = builtins.fetchGit {
inherit url rev;
allRefs = true;
};
isInner = ((fromTOML (builtins.readFile (tree + /Cargo.toml))).package or {}).name != pkg.name;
in pkgs.runCommand "${pkg.name}-${pkg.version}" {}
''
tree=${tree}

if grep --quiet '\[workspace\]' $tree/Cargo.toml; then
if ${if isInner then "true" else "false"} || grep --quiet 'name = \[workspace\]' $tree/Cargo.toml; then
if [[ -e $tree/${pkg.name} ]]; then
tree=$tree/${pkg.name}
fi
Expand All @@ -56,8 +77,9 @@
printf '{"files":{},"package":null}' > "$out/.cargo-checksum.json"

cat > $out/.cargo-config <<EOF
[source."${url}"]
[source."${url}${if isNull branch then "" else "?branch=${branch}"}"]
git = "${url}"
${if isNull branch then "" else "branch = \"${branch}\""}
rev = "${rev}"
replace-with = "vendored-sources"
EOF
Expand All @@ -77,6 +99,16 @@
cat > $out/vendor/config <<EOF
[source.crates-io]
replace-with = "vendored-sources"
${
(builtins.foldl' (res: name:
res + ''
[source."${name}"]
registry = "${name}"
replace-with = "vendored-sources"
''
) "" (builtins.attrNames registries)
)
}

[source.vendored-sources]
directory = "vendor"
Expand Down