diff --git a/pkgs/by-name/sl/slic3r/package.nix b/pkgs/by-name/sl/slic3r/package.nix
deleted file mode 100644
index 6931cc5e7130..000000000000
--- a/pkgs/by-name/sl/slic3r/package.nix
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  fetchpatch,
-  perl,
-  makeWrapper,
-  makeDesktopItem,
-  which,
-  perlPackages,
-  boost,
-  wrapGAppsHook3,
-}:
-
-stdenv.mkDerivation rec {
-  version = "1.3.0";
-  pname = "slic3r";
-
-  src = fetchFromGitHub {
-    owner = "alexrj";
-    repo = "Slic3r";
-    rev = version;
-    sha256 = "sha256-cf0QTOzhLyTcbJryCQoTVzU8kfrPV6SLpqi4s36X5N0=";
-  };
-
-  nativeBuildInputs = [
-    makeWrapper
-    which
-    wrapGAppsHook3
-  ];
-  buildInputs = [
-    boost
-  ]
-  ++ (with perlPackages; [
-    perl
-    EncodeLocale
-    MathClipper
-    ExtUtilsXSpp
-    MathConvexHullMonotoneChain
-    MathGeometryVoronoi
-    MathPlanePath
-    Moo
-    IOStringy
-    ClassXSAccessor
-    Wx
-    GrowlGNTP
-    NetDBus
-    ImportInto
-    XMLSAX
-    ExtUtilsMakeMaker
-    OpenGL
-    WxGLCanvas
-    ModuleBuild
-    LWP
-    ExtUtilsCppGuess
-    ModuleBuildWithXSpp
-    ExtUtilsTypemapsDefault
-    DevelChecklib
-    locallib
-  ]);
-
-  desktopItem = makeDesktopItem {
-    name = "slic3r";
-    exec = "slic3r";
-    icon = "slic3r";
-    comment = "G-code generator for 3D printers";
-    desktopName = "Slic3r";
-    genericName = "3D printer tool";
-    categories = [ "Development" ];
-  };
-
-  prePatch = ''
-    # In nix ioctls.h isn't available from the standard kernel-headers package
-    # on other distributions. As the copy in glibc seems to be identical to the
-    # one in the kernel, we use that one instead.
-    sed -i 's|"/usr/include/asm-generic/ioctls.h"|<asm-generic/ioctls.h>|g' xs/src/libslic3r/GCodeSender.cpp
-  '';
-
-  patches = [
-    (fetchpatch {
-      url = "https://web.archive.org/web/20230606220657if_/https://sources.debian.org/data/main/s/slic3r/1.3.0%2Bdfsg1-5/debian/patches/Drop-error-admesh-works-correctly-on-little-endian-machin.patch";
-      hash = "sha256-+F94jzMFBdI++SKgyEZTBaHFVbjxWwgJa8YVbpK0euI=";
-    })
-    (fetchpatch {
-      url = "https://web.archive.org/web/20230606220036if_/https://sources.debian.org/data/main/s/slic3r/1.3.0+dfsg1-5/debian/patches/0006-Fix-FTBFS-with-Boost-1.71.patch";
-      hash = "sha256-4jvNccttig5YI1hXSANAWxVz6C4+kowlacMXVCpFgOo=";
-    })
-    (fetchpatch {
-      url = "https://web.archive.org/web/20230606220054if_/https://sources.debian.org/data/main/s/slic3r/1.3.0+dfsg1-5/debian/patches/fix_boost_174.patch";
-      hash = "sha256-aSmxc2htmrla9l/DIRWeKdBW0LTV96wMUZSLLNjgbzY=";
-    })
-  ];
-
-  buildPhase = ''
-    export SLIC3R_NO_AUTO=true
-    export LD=$CXX
-    export PERL5LIB="./xs/blib/arch/:./xs/blib/lib:$PERL5LIB"
-
-    substituteInPlace Build.PL \
-      --replace "0.9918" "0.9923" \
-      --replace "eval" ""
-
-    pushd xs
-      perl Build.PL
-      perl Build
-    popd
-
-    perl Build.PL --gui
-  '';
-
-  installPhase = ''
-    mkdir -p "$out/share/slic3r/"
-    cp -r * "$out/share/slic3r/"
-    wrapProgram "$out/share/slic3r/slic3r.pl" \
-      --prefix PERL5LIB : "$out/share/slic3r/xs/blib/arch:$out/share/slic3r/xs/blib/lib:$PERL5LIB"
-    mkdir -p "$out/bin"
-    ln -s "$out/share/slic3r/slic3r.pl" "$out/bin/slic3r"
-    mkdir -p "$out/share/pixmaps/"
-    ln -s "$out/share/slic3r/var/Slic3r.png" "$out/share/pixmaps/slic3r.png"
-    mkdir -p "$out/share/applications"
-    cp "$desktopItem"/share/applications/* "$out/share/applications/"
-  '';
-
-  meta = with lib; {
-    description = "G-code generator for 3D printers";
-    mainProgram = "slic3r";
-    longDescription = ''
-      Slic3r is the tool you need to convert a digital 3D model into printing
-      instructions for your 3D printer. It cuts the model into horizontal
-      slices (layers), generates toolpaths to fill them and calculates the
-      amount of material to be extruded.'';
-    homepage = "https://slic3r.org/";
-    license = licenses.agpl3Plus;
-    platforms = platforms.linux;
-    maintainers = with maintainers; [ bjornfor ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index ab433d1e8c9a..58e7cf890438 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -2123,6 +2123,7 @@ mapAliases {
   SkypeExport = skypeexport; # Added 2024-06-12
   skypeforlinux = throw "Skype has been shut down in May 2025"; # Added 2025-05-05
   slack-dark = throw "'slack-dark' has been renamed to/replaced by 'slack'"; # Converted to throw 2024-10-17
+  slic3r = throw "'slic3r' has been removed because it is unmaintained"; # Added 2025-08-26
   slimerjs = throw "slimerjs does not work with any version of Firefox newer than 59; upstream ended the project in 2021. <https://slimerjs.org/faq.html#end-of-development>"; # added 2025-01-06
   sloccount = throw "'sloccount' has been removed because it is unmaintained. Consider migrating to 'loccount'"; # added 2025-05-17
   slrn = throw "'slrn' has been removed because it is unmaintained upstream and broken."; # Added 2025-06-11