llama.cpp: 4574, add model_converters variant

Closes: https://trac.macports.org/ticket/71927

Author: i0ntempest

llm/llama.cpp/Portfile

@@ -5,9 +5,9 @@ PortGroup               github 1.0
 PortGroup               cmake 1.1
 PortGroup               legacysupport 1.1
 
-github.setup            ggerganov llama.cpp 4534 b
+github.setup            ggerganov llama.cpp 4574 b
 github.tarball_from     archive
-set git-commit          955a6c2
+set git-commit          7fee288
 # This line is for displaying commit in CLI only
 revision                0
 categories              llm
@@ -19,9 +19,9 @@ long_description        The main goal of ${name} is to enable LLM inference with
                         setup and state-of-the-art performance on a wide variety of hardware\
                          - locally and in the cloud.
 
-checksums               rmd160  771fa15d2c7b6a3ef9114fd3c0afb676e0ba6559 \
-                        sha256  f4b57daa8d6bfe957f08a79f02ea9d24018ce9e73663c35a5c21f31ed3ccfcb8 \
-                        size    20496342
+checksums               rmd160  047ed3d0c1252e83dd78ade21175899e2c7c4b05 \
+                        sha256  ce168eccb03da802c39486ab6b18dd225027d5c34cfbc5f46fec1870a1bdd624 \
+                        size    20504479
 
 # error: 'filesystem' file not found on 10.14
 legacysupport.newest_darwin_requires_legacy \
@@ -41,8 +41,7 @@ post-patch {
 
 compiler.cxx_standard   2017
 
-configure.args-append   -LAH \
-                        -DGGML_LTO=ON \
+configure.args-append   -DGGML_LTO=ON \
                         -DGGML_CCACHE=OFF \
                         -DGGML_OPENMP=OFF \
                         -DLLAMA_CURL=ON
@@ -60,6 +59,10 @@ if {${os.platform} eq "darwin" && ${os.subplatform} eq "macosx" && \
                         -DGGML_METAL_EMBED_LIBRARY=OFF
 }
 
+post-destroot {
+    delete {*}[glob -directory ${destroot}${prefix}/bin/ convert*.py]
+}
+
 variant blas description {Uses BLAS, improves performance} {
     configure.args-append \
                         -DGGML_BLAS=ON
@@ -90,6 +93,32 @@ variant openmp description {enable parallelism support using OpenMP} {
     }
 }
 
+variant model_converters description {install extra model conversion Python scripts} {
+    set ::python_branch   3.12
+    set ::python_version  [string map {. ""} ${::python_branch}]
+    depends_run-append    port:python${::python_version} \
+                          port:py${::python_version}-numpy \
+                          port:py${::python_version}-pytorch \
+                          port:py${::python_version}-transformers \
+                          port:py${::python_version}-gguf
+
+    post-patch {
+        reinplace "s|#!/usr/bin/env python3|#!${prefix}/bin/python${::python_branch}|" {*}[glob ${worksrcpath}/convert*.py]
+    }
+
+    post-destroot {
+        xinstall -d ${destroot}${prefix}/libexec/${name}
+        xinstall -m 755 {*}[glob ${worksrcpath}/convert*.py] ${destroot}${prefix}/libexec/${name}
+        foreach file [glob -directory ${destroot}${prefix}/libexec/${name} *.py] {
+            set filebasename [file rootname [file tail $file]]
+            set link ${destroot}${prefix}/bin/[lindex [split ${name} .] 0]-[string map {_ -} ${filebasename}]
+            set target [string replace ${file} 0 [string length ${destroot}]-1]
+            ui_debug "Creating symlink: ${link} => ${target}"
+            ln -s ${target} ${link}
+        }
+    }
+}
+
 variant native description "Force local build and optimize for CPU" {
     configure.args-append \
                         -DGGML_NATIVE=ON