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{ lib, buildGoModule, fetchFromGitHub }:
buildGoModule rec {
pname = "pdfcpu";
version = "0.8.0";
src = fetchFromGitHub {
owner = "pdfcpu";
repo = pname;
rev = "v${version}";
hash = "sha256-E1D2DvwwrtlY06kvCZkoAO5VcdtkBJYLcxuqGsulFUA=";
# Apparently upstream requires that the compiled executable will know the
# commit hash and the date of the commit. This information is also presented
# in the output of `pdfcpu version` which we use as a sanity check in the
# installCheckPhase. This was discussed upstream in:
#
# - https://github.com/pdfcpu/pdfcpu/issues/751
# - https://github.com/pdfcpu/pdfcpu/pull/752
#
# The trick used here is to write that information into files in `src`'s
# `$out`, and then read them into the `ldflags`. We also delete the `.git`
# directories in `src`'s $out afterwards, imitating what's done if
# `leaveDotGit = false;` See also:
# https://github.com/NixOS/nixpkgs/issues/8567
leaveDotGit = true;
postFetch = ''
cd "$out"
git rev-parse HEAD > $out/COMMIT
git log -1 --pretty=%cd --date=format:'%Y-%m-%dT%H:%M:%SZ' > $out/SOURCE_DATE
find "$out" -name .git -print0 | xargs -0 rm -rf
'';
};
vendorHash = "sha256-4k4aZnQ9SjcGr/ziCacfcVfVk7w4Qhli2rOeYE76Qs0=";
ldflags = [
"-s"
"-w"
"-X main.version=v${version}"
];
# ldflags based on metadata from git and source
preBuild = ''
ldflags+=" -X main.commit=$(cat COMMIT)"
ldflags+=" -X main.date=$(cat SOURCE_DATE)"
'';
# No tests
doCheck = false;
doInstallCheck = true;
installCheckPhase = ''
export HOME=$(mktemp -d)
echo checking the version print of pdfcpu
$out/bin/pdfcpu version | grep ${version}
$out/bin/pdfcpu version | grep $(cat COMMIT | cut -c1-8)
$out/bin/pdfcpu version | grep $(cat SOURCE_DATE)
'';
subPackages = [ "cmd/pdfcpu" ];
meta = with lib; {
description = "A PDF processor written in Go";
homepage = "https://pdfcpu.io";
license = licenses.asl20;
maintainers = with maintainers; [ doronbehar ];
mainProgram = "pdfcpu";
};
}
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