Merge pull request #244010 from majiru/add-fetch9front

fetch9front: init

pkgs/build-support/fetch9front/default.nix

@@ -0,0 +1,36 @@
+{ fetchgit, fetchzip, lib }:
+
+lib.makeOverridable (
+  { owner
+  , repo
+  , rev
+  , domain ? "git.9front.org"
+  , name ? "source"
+  , leaveDotGit ? false
+  , deepClone ? false
+  , ... # For hash agility
+  } @ args:
+
+  let
+    passthruAttrs = removeAttrs args [ "domain" "owner" "repo" "rev" "leaveDotGit" "deepClone" ];
+
+    useFetchGit = leaveDotGit || deepClone;
+    fetcher = if useFetchGit then fetchgit else fetchzip;
+
+    gitRepoUrl = "git://${domain}/${owner}/${repo}";
+
+    fetcherArgs = (if useFetchGit then {
+      # git9 does not support shallow fetches
+      inherit rev leaveDotGit;
+      url = gitRepoUrl;
+    } else {
+      url = "https://${domain}/${owner}/${repo}/${rev}/snap.tar.gz";
+
+      passthru = {
+        inherit gitRepoUrl;
+      };
+    }) // passthruAttrs // { inherit name; };
+  in
+
+  fetcher fetcherArgs // { inherit rev; }
+)

pkgs/common-updater/unstable-updater.nix

@@ -12,6 +12,7 @@
 , branch ? null
 , stableVersion ? false # Use version format according to RFC 107 (i.e. LAST_TAG+date=YYYY-MM-DD)
 , tagPrefix ? "" # strip this prefix from a tag name when using stable version
+, shallowClone ? true
 }:
 
 let
@@ -22,6 +23,7 @@ let
     branch=""
     use_stable_version=""
     tag_prefix=""
+    shallow_clone=""
 
     while (( $# > 0 )); do
         flag="$1"
@@ -39,6 +41,9 @@ let
           --tag-prefix=*)
             tag_prefix="''${flag#*=}"
             ;;
+          --shallow-clone)
+            shallow_clone=1
+            ;;
           *)
             echo "$0: unknown option ‘''${flag}’"
             exit 1
@@ -58,9 +63,12 @@ let
 
     cloneArgs=(
       --bare
-      --depth=1
     )
 
+    if [[ "$shallow_clone" == "1" ]]; then
+        cloneArgs+=(--depth=1)
+    fi
+
     if [[ -n "$branch" ]]; then
         cloneArgs+=(--branch="$branch")
     fi
@@ -101,7 +109,8 @@ let
         --rev="$commit_sha"
   '';
 
-in [
+in
+[
   updateScript
   "--url=${builtins.toString url}"
 ] ++ lib.optionals (branch != null) [
@@ -109,4 +118,6 @@ in [
 ] ++ lib.optionals stableVersion [
   "--use-stable-version"
   "--tag-prefix=${tagPrefix}"
+] ++ lib.optionals shallowClone [
+  "--shallow-clone"
 ]

pkgs/shells/rc-9front/default.nix

@@ -1,6 +1,7 @@
 { lib
 , stdenv
-, fetchgit
+, fetchFrom9Front
+, unstableGitUpdater
 , byacc
 , installShellFiles
 }:
@@ -9,8 +10,10 @@ stdenv.mkDerivation {
   pname = "rc-9front";
   version = "unstable-2022-11-01";
 
-  src = fetchgit {
-    url = "git://shithub.us/cinap_lenrek/rc";
+  src = fetchFrom9Front {
+    domain = "shithub.us";
+    owner = "cinap_lenrek";
+    repo = "rc";
     rev = "69041639483e16392e3013491fcb382efd2b9374";
     hash = "sha256-xc+EfC4bc9ZA97jCQ6CGCzeLGf+Hx3/syl090/x4ew4=";
   };
@@ -31,7 +34,10 @@ stdenv.mkDerivation {
     install -m644 rcmain.unix $out/lib/rcmain
   '';
 
-  passthru.shellPath = "/bin/rc";
+  passthru = {
+    shellPath = "/bin/rc";
+    updateScript = unstableGitUpdater { shallowClone = false; };
+  };
 
   meta = with lib; {
     description = "The 9front shell";

pkgs/tools/admin/drawterm/default.nix

@@ -1,6 +1,7 @@
 { stdenv
 , lib
-, fetchgit
+, fetchFrom9Front
+, unstableGitUpdater
 , installShellFiles
 , makeWrapper
 , xorg
@@ -19,10 +20,11 @@ stdenv.mkDerivation {
   pname = "drawterm";
   version = "unstable-2023-06-27";
 
-  src = fetchgit {
-    url = "git://git.9front.org/plan9front/drawterm";
+  src = fetchFrom9Front {
+    owner = "plan9front";
+    repo = "drawterm";
     rev = "36debf46ac184a22c6936345d22e4cfad995948c";
-    sha256 = "ebqw1jqeRC0FWeUIO/HaEovuwzU6+B48TjZbVJXByvA=";
+    hash = "sha256-ebqw1jqeRC0FWeUIO/HaEovuwzU6+B48TjZbVJXByvA=";
   };
 
   enableParallelBuilding = true;
@@ -54,6 +56,8 @@ stdenv.mkDerivation {
     installManPage drawterm.1
   '';
 
+  passthru.updateScript = unstableGitUpdater { shallowClone = false; };
+
   meta = with lib; {
     description = "Connect to Plan 9 CPU servers from other operating systems.";
     homepage = "https://drawterm.9front.org/";

pkgs/top-level/all-packages.nix

@@ -1163,6 +1163,8 @@ with pkgs;
 
   fetchFromGitiles = callPackage ../build-support/fetchgitiles { };
 
+  fetchFrom9Front = callPackage ../build-support/fetch9front { };
+
   fetchFromRepoOrCz = callPackage ../build-support/fetchrepoorcz { };
 
   fetchgx = callPackage ../build-support/fetchgx { };