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refactor(nix/lazy-deps): use runCommand

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writeTextFile is nice, but not flexible enough to allow the passthru
argument needed for a follow-up change.

Change-Id: I4f0cffd0f29b2c06b0155101d3806c9c5745c37a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5854
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
This commit is contained in:
zimbatm 2022-05-30 18:59:48 +02:00 committed by tazjin
parent 71174f6626
commit 99030d10ce
1 changed files with 37 additions and 29 deletions
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66
nix/lazy-deps/default.nix
View file

@ -38,38 +38,46 @@ in
# derivation.
tools:
pkgs.writeTextFile {
name = "lazy-dispatch";
executable = true;
destination = "/bin/__dispatch";
let
self = pkgs.runCommandNoCC "lazy-dispatch"
{
text = ''
#!${pkgs.runtimeShell}
set -ue
text = ''
#!${pkgs.runtimeShell}
set -ue
if ! type git>/dev/null || ! type nix-build>/dev/null; then
echo "The 'git' and 'nix-build' commands must be available." >&2
exit 127
fi
if ! type git>/dev/null || ! type nix-build>/dev/null; then
echo "The 'git' and 'nix-build' commands must be available." >&2
exit 127
fi
readonly REPO_ROOT=$(git rev-parse --show-toplevel)
TARGET_TOOL=$(basename "$0")
readonly REPO_ROOT=$(git rev-parse --show-toplevel)
TARGET_TOOL=$(basename "$0")
case "''${TARGET_TOOL}" in
${invocations tools}
*)
echo "''${TARGET_TOOL} is currently not installed in this repository." >&2
exit 127
;;
esac
case "''${TARGET_TOOL}" in
${invocations tools}
*)
echo "''${TARGET_TOOL} is currently not installed in this repository." >&2
exit 127
;;
esac
result=$(nix-build --no-out-link --attr "''${attr}" "''${REPO_ROOT}")
PATH="''${result}/bin:$PATH"
exec "''${TARGET_TOOL}" "''${@}"
'';
}
''
# Write the dispatch code
target=$out/bin/__dispatch
mkdir -p "$(dirname "$target")"
echo "$text" > $target
chmod +x $target
result=$(nix-build --no-out-link --attr "''${attr}" "''${REPO_ROOT}")
PATH="''${result}/bin:$PATH"
exec "''${TARGET_TOOL}" "''${@}"
'';
# Add symlinks from all the tools to the dispatch
${concatStringsSep "\n" (map link (attrNames tools))}
checkPhase = ''
${pkgs.stdenv.shellDryRun} "$target"
${concatStringsSep "\n" (map link (attrNames tools))}
'';
}
# Check that it's working-ish
${pkgs.stdenv.shellDryRun} $target
'';
in
self