What did I try:
snippet from Makefile:
echo "file://`realpath ./artifact`" > ./url
nix-hash --type sha256 --base32 ./artifact ./sha256
nix-prefetch-url --type sha256 --name artifact \
`printf \`cat ./url\``
`printf \`cat ./sha256\``
nice nix-build --pure -Qsnippet from default.nix
{ stdenv }:
with stdenv;
mkDerivation {
name = "ma";
src = with builtins; fetchTarball {
url = replaceStrings ["\n"] [""] (
readFile ./url
);
sha256 = replaceStrings ["\n"] [""] (
readFile ./sha256
);
};
installPhase = ''
mkdir -p $out
cp -a ./{.[^.]*,*} $out/
'';
}or simply:
{ stdenv, requireFile }:
with stdenv;
let
src = with builtins; requireFile {
url = replaceStrings ["\n"] [""] (
readFile ./url
);
sha256 = replaceStrings ["\n"] [""] (
readFile ./sha256
);
hashMode = "recursive";
};
in
artifact = runCommand "artifact" {} ''
mkdir -p $out
cp -a ${src}/{.[^.]*,*} $out/
'';