2f807d7f14
This is in order to advance the rewriting from stdenv.lib to lib. https://github.com/NixOS/nixpkgs/issues/108938 The hard part about changing the argument is that a package might not include lib in its arguments, which is why I use hnix to check whether lib is included and add it to the import list if it doesn’t already exist there. So far, only the really common pattern of meta = with stdenv.lib; is rewritten. Change-Id: I370f0a321b0e5a5bd21ec21fc7cefdd65ec845ed Reviewed-on: https://cl.tvl.fyi/c/depot/+/2345 Tested-by: BuildkiteCI Reviewed-by: Profpatsch <mail@profpatsch.de>
84 lines
2.1 KiB
Nix
84 lines
2.1 KiB
Nix
{ depot, pkgs, ... }:
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let
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inherit (depot.nix)
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writeExecline
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;
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inherit (depot.users.Profpatsch.lib)
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debugExec
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eprintf
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;
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export-json-object = pkgs.writers.writePython3 "export-json-object" {} ''
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import json
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import sys
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import os
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d = json.load(sys.stdin)
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if d == {}:
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sys.exit(0)
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for k, v in d.items():
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os.environ[k] = str(v)
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os.execvp(sys.argv[1], sys.argv[1:])
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'';
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meta-stdenv-lib = pkgs.writers.writeHaskell "meta-stdenv-lib" {
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libraries = [
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pkgs.haskellPackages.hnix
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pkgs.haskellPackages.aeson
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];
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} ./MetaStdenvLib.hs;
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replace-between-lines = writeExecline "replace-between-lines" { readNArgs = 1; } [
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"importas" "-ui" "file" "fileName"
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"importas" "-ui" "from" "fromLine"
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"importas" "-ui" "to" "toLine"
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"if" [ eprintf "\${from}-\${to}" ]
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(debugExec "adding lib")
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"sed"
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"-e" "\${from},\${to} \${1}"
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"-i" "$file"
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];
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add-lib-if-necessary = writeExecline "add-lib-if-necessary" { readNArgs = 1; } [
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"pipeline" [ meta-stdenv-lib "$1" ]
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export-json-object
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# first replace any stdenv.lib mentions in the arg header
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# if this is not done, the replace below kills these.
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# Since we want it anyway ultimately, let’s do it here.
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"if" [ replace-between-lines "s/stdenv\.lib/lib/" ]
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# then add the lib argument
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# (has to be before stdenv, otherwise default arguments might be in the way)
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replace-between-lines "s/stdenv/lib, stdenv/"
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];
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metaString = ''meta = with stdenv.lib; {'';
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replace-stdenv-lib = pkgs.writers.writeBash "replace-stdenv-lib" ''
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set -euo pipefail
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sourceDir="$1"
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for file in $(
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${pkgs.ripgrep}/bin/rg \
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--files-with-matches \
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--fixed-strings \
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-e '${metaString}' \
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"$sourceDir"
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)
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do
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echo "replacing stdenv.lib meta in $file" >&2
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sed -e '/${metaString}/ s/stdenv.lib/lib/' \
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-i "$file"
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${add-lib-if-necessary} "$file"
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done
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'';
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in {
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# requires hnix, which we don’t want in tvl for now
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# uncomment manually if you want to use it.
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# inherit
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# meta-stdenv-lib
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# replace-stdenv-lib
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# ;
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}
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