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-rw-r--r--pkgs/tools/archivers/p7zip/default.nix2
-rw-r--r--pkgs/tools/archivers/p7zip/setup-hook.sh5
2 files changed, 7 insertions, 0 deletions
diff --git a/pkgs/tools/archivers/p7zip/default.nix b/pkgs/tools/archivers/p7zip/default.nix
index 1af3f53ade9..2b61b5b2679 100644
--- a/pkgs/tools/archivers/p7zip/default.nix
+++ b/pkgs/tools/archivers/p7zip/default.nix
@@ -25,6 +25,8 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  setupHook = ./setup-hook.sh;
+
   meta = {
     homepage = http://p7zip.sourceforge.net/;
     description = "A port of the 7-zip archiver";
diff --git a/pkgs/tools/archivers/p7zip/setup-hook.sh b/pkgs/tools/archivers/p7zip/setup-hook.sh
new file mode 100644
index 00000000000..4dc88f07c0b
--- /dev/null
+++ b/pkgs/tools/archivers/p7zip/setup-hook.sh
@@ -0,0 +1,5 @@
+unpackCmdHooks+=(_try7zip)
+_try7zip() {
+    if ! [[ "$curSrc" =~ \.7z$ ]]; then return 1; fi
+    7z x "$curSrc"
+}