mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-25 07:00:43 +00:00
72 lines
2.4 KiB
Nix
72 lines
2.4 KiB
Nix
{stdenvNoCC, git, cacert}: let
|
|
urlToName = url: rev: let
|
|
inherit (stdenvNoCC.lib) removeSuffix splitString last;
|
|
base = last (splitString ":" (baseNameOf (removeSuffix "/" url)));
|
|
|
|
matched = builtins.match "(.*).git" base;
|
|
|
|
short = builtins.substring 0 7 rev;
|
|
|
|
appendShort = if (builtins.match "[a-f0-9]*" rev) != null
|
|
then "-${short}"
|
|
else "";
|
|
in "${if matched == null then base else builtins.head matched}${appendShort}";
|
|
in
|
|
{ url, rev ? "HEAD", md5 ? "", sha256 ? "", leaveDotGit ? deepClone
|
|
, fetchSubmodules ? true, deepClone ? false
|
|
, branchName ? null
|
|
, name ? urlToName url rev
|
|
, # Shell code executed after the file has been fetched
|
|
# successfully. This can do things like check or transform the file.
|
|
postFetch ? ""
|
|
, preferLocalBuild ? true
|
|
}:
|
|
|
|
/* NOTE:
|
|
fetchgit has one problem: git fetch only works for refs.
|
|
This is because fetching arbitrary (maybe dangling) commits may be a security risk
|
|
and checking whether a commit belongs to a ref is expensive. This may
|
|
change in the future when some caching is added to git (?)
|
|
Usually refs are either tags (refs/tags/*) or branches (refs/heads/*)
|
|
Cloning branches will make the hash check fail when there is an update.
|
|
But not all patches we want can be accessed by tags.
|
|
|
|
The workaround is getting the last n commits so that it's likely that they
|
|
still contain the hash we want.
|
|
|
|
for now : increase depth iteratively (TODO)
|
|
|
|
real fix: ask git folks to add a
|
|
git fetch $HASH contained in $BRANCH
|
|
facility because checking that $HASH is contained in $BRANCH is less
|
|
expensive than fetching --depth $N.
|
|
Even if git folks implemented this feature soon it may take years until
|
|
server admins start using the new version?
|
|
*/
|
|
|
|
assert deepClone -> leaveDotGit;
|
|
|
|
if md5 != "" then
|
|
throw "fetchgit does not support md5 anymore, please use sha256"
|
|
else
|
|
stdenvNoCC.mkDerivation {
|
|
inherit name;
|
|
builder = ./builder.sh;
|
|
fetcher = ./nix-prefetch-git; # This must be a string to ensure it's called with bash.
|
|
nativeBuildInputs = [git];
|
|
|
|
outputHashAlgo = "sha256";
|
|
outputHashMode = "recursive";
|
|
outputHash = sha256;
|
|
|
|
inherit url rev leaveDotGit fetchSubmodules deepClone branchName postFetch;
|
|
|
|
GIT_SSL_CAINFO = "${cacert}/etc/ssl/certs/ca-bundle.crt";
|
|
|
|
impureEnvVars = stdenvNoCC.lib.fetchers.proxyImpureEnvVars ++ [
|
|
"GIT_PROXY_COMMAND" "SOCKS_SERVER"
|
|
];
|
|
|
|
inherit preferLocalBuild;
|
|
}
|