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-rw-r--r--README.md4
-rw-r--r--lib/types/populate.nix4
-rw-r--r--pkgs/populate/default.nix18
3 files changed, 23 insertions, 3 deletions
diff --git a/README.md b/README.md
index d6f921f..70ba3dc 100644
--- a/README.md
+++ b/README.md
@@ -242,6 +242,10 @@ Supported attributes:
* `clean.exclude` -
List of patterns that should be excluded from Git cleaning.
+* `shallow` (optional)
+ boolean that controls whether only the requested commit ref. should be fetched
+ instead of the whole history, to save disk space and bandwith. Defaults to `false`.
+
### `pass`
diff --git a/lib/types/populate.nix b/lib/types/populate.nix
index 4ac9b1f..894b8cc 100644
--- a/lib/types/populate.nix
+++ b/lib/types/populate.nix
@@ -140,6 +140,10 @@
url = lib.mkOption {
type = lib.types.str; # TODO lib.types.git.url
};
+ shallow = lib.mkOption {
+ default = false;
+ type = lib.types.bool;
+ };
};
};
pass = lib.types.submodule {
diff --git a/pkgs/populate/default.nix b/pkgs/populate/default.nix
index 40c37e3..bac1432 100644
--- a/pkgs/populate/default.nix
+++ b/pkgs/populate/default.nix
@@ -53,7 +53,11 @@ let
pop.git = target: source: runShell target /* sh */ ''
set -efu
if ! test -e ${quote target.path}; then
- git clone --recurse-submodules ${quote source.url} ${quote target.path}
+ ${if source.shallow then /* sh */ ''
+ git init ${quote target.path}
+ '' else /* sh */ ''
+ git clone --recurse-submodules ${quote source.url} ${quote target.path}
+ ''}
fi
cd ${quote target.path}
if ! url=$(git config remote.origin.url); then
@@ -67,10 +71,18 @@ let
if ! test "$(git log --format=%H -1)" = "$hash"; then
${if source.fetchAlways then /* sh */ ''
- git fetch origin
+ ${if source.shallow then /* sh */ ''
+ git fetch --depth=1 origin "$hash"
+ '' else /* sh */ ''
+ git fetch origin
+ ''}
'' else /* sh */ ''
if ! git log -1 "$hash" >/dev/null 2>&1; then
- git fetch origin
+ ${if source.shallow then /* sh */ ''
+ git fetch --depth=1 origin "$hash"
+ '' else /* sh */ ''
+ git fetch origin
+ ''}
fi
''}
git reset --hard "$hash" >&2