internal/rosa: resolve preset by name

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/all.go

@@ -80,3 +80,56 @@ func (t Toolchain) Load(p PArtifact) pkg.Artifact {
 	})
 	return artifacts[t][p]
 }
+
+// ResolveName returns a [PArtifact] by name.
+func (t Toolchain) ResolveName(name string) (p PArtifact, ok bool) {
+	p, ok = map[string]PArtifact{
+		"acl":               ACL,
+		"attr":              Attr,
+		"autoconf":          Autoconf,
+		"bash":              Bash,
+		"busybox":           Busybox,
+		"cmake":             CMake,
+		"coreutils":         Coreutils,
+		"diffutils":         Diffutils,
+		"fuse":              Fuse,
+		"gawk":              Gawk,
+		"gettext":           Gettext,
+		"git":               Git,
+		"go":                Go,
+		"gperf":             Gperf,
+		"hakurei":           Hakurei,
+		"hakurei-dist":      HakureiDist,
+		"iniconfig":         IniConfig,
+		"kernel-headers":    KernelHeaders,
+		"libXau":            LibXau,
+		"libexpat":          Libexpat,
+		"libseccomp":        Libseccomp,
+		"libxml2":           Libxml2,
+		"libffi":            Libffi,
+		"libgd":             Libgd,
+		"m4":                M4,
+		"make":              Make,
+		"meson":             Meson,
+		"nss":               NSS,
+		"nss-cacert":        NSSCACert,
+		"ninja":             Ninja,
+		"packaging":         Packaging,
+		"patch":             Patch,
+		"perl":              Perl,
+		"pkg-config":        PkgConfig,
+		"pluggy":            Pluggy,
+		"pytest":            PyTest,
+		"pygments":          Pygments,
+		"python":            Python,
+		"rsync":             Rsync,
+		"setuptools":        Setuptools,
+		"wayland":           Wayland,
+		"wayland-protocols": WaylandProtocols,
+		"xcb":               XCB,
+		"xcb-proto":         XCBProto,
+		"xproto":            Xproto,
+		"zlib":              Zlib,
+	}[name]
+	return
+}