diff --git a/pkgs/by-name/pg/pgf1/package.nix b/pkgs/by-name/pg/pgf1/package.nix
deleted file mode 100644
index fb5e7a9a420f..000000000000
--- a/pkgs/by-name/pg/pgf1/package.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-{
-  lib,
-  stdenvNoCC,
-  fetchFromGitHub,
-}:
-
-stdenvNoCC.mkDerivation (finalAttrs: {
-  pname = "pgf";
-  version = "1.18";
-
-  src = fetchFromGitHub {
-    owner = "pgf-tikz";
-    repo = "pgf";
-    tag = "version-${lib.replaceStrings [ "." ] [ "-" ] finalAttrs.version}";
-    hash = "sha256-WZ/191iEDd5VK1bnV9JZx2BZfACUeAUhAqrlyx+ZvA4=";
-  };
-
-  dontConfigure = true;
-  dontBuild = true;
-
-  installPhase = ''
-    runHook preInstall
-
-    mkdir -p $out/share/texmf-nix
-    cp -prd context doc generic latex plain $out/share/texmf-nix/
-
-    runHook postInstall
-  '';
-
-  meta = with lib; {
-    homepage = "https://github.com/pgf-tikz/pgf";
-    description = "Portable Graphic Format for TeX - version ${finalAttrs.version}";
-    branch = lib.versions.major version;
-    license = licenses.gpl2Plus;
-    maintainers = with maintainers; [ ];
-    platforms = platforms.unix;
-  };
-})
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 6c275304bfee..af3bda2322ea 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1465,13 +1465,13 @@ mapAliases {
   powerdns = pdns; # Added 2022-03-28
   projectm = throw "Since version 4, 'projectm' has been split into 'libprojectm' (the library) and 'projectm-sdl-cpp' (the SDL2 frontend). ProjectM 3 has been moved to 'projectm_3'"; # Added 2024-11-10
 
-  # postgresql plugins
   cstore_fdw = postgresqlPackages.cstore_fdw;
   pg_cron = postgresqlPackages.pg_cron;
   pg_hll = postgresqlPackages.pg_hll;
   pg_repack = postgresqlPackages.pg_repack;
   pg_similarity = postgresqlPackages.pg_similarity;
   pg_topn = postgresqlPackages.pg_topn;
+  pgf1 = throw "'pgf1' has been removed since it is unmaintained. Consider using 'pgf' instead"; # Added 2025-05-10
   pgjwt = postgresqlPackages.pgjwt;
   pgroonga = postgresqlPackages.pgroonga;
   pgtap = postgresqlPackages.pgtap;