diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b564878
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/num-format-0.4.0.crate
diff --git a/num-format-fix-metadata.diff b/num-format-fix-metadata.diff
new file mode 100644
index 0000000..c367f9b
--- /dev/null
+++ b/num-format-fix-metadata.diff
@@ -0,0 +1,50 @@
+--- num-format-0.4.0/Cargo.toml	1970-01-01T00:00:00+00:00
++++ num-format-0.4.0/Cargo.toml	2021-11-18T18:07:59.466061+00:00
+@@ -25,7 +25,7 @@
+ license = "MIT/Apache-2.0"
+ repository = "https://github.com/bcmyers/num-format"
+ [dependencies.arrayvec]
+-version = "0.4"
++version = "0.5"
+ default-features = false
+ 
+ [dependencies.itoa]
+@@ -38,7 +38,7 @@
+ optional = true
+ 
+ [dependencies.num-bigint]
+-version = "0.2"
++version = "0.4"
+ optional = true
+ 
+ [dependencies.serde]
+@@ -61,8 +61,8 @@
+ default = ["std"]
+ std = ["arrayvec/default", "itoa/default", "itoa/i128"]
+ with-num-bigint = ["num-bigint", "std"]
+-with-serde = ["arrayvec/serde-1", "serde/derive"]
+-with-system-locale = ["cfg-if", "encoding_rs", "lazy_static", "libc", "num-format-windows", "std", "widestring", "winapi/winnls"]
++with-serde = ["arrayvec/serde", "serde/derive"]
++with-system-locale = ["cfg-if", "encoding_rs", "lazy_static", "libc", "std"]
+ [target."cfg(unix)".dependencies.cfg-if]
+ version = "0.1"
+ optional = true
+@@ -74,18 +74,6 @@
+ [target."cfg(unix)".dependencies.libc]
+ version = "0.2"
+ optional = true
+-[target."cfg(windows)".dependencies.num-format-windows]
+-version = "0.3"
+-optional = true
+-
+-[target."cfg(windows)".dependencies.widestring]
+-version = "0.4"
+-optional = true
+-
+-[target."cfg(windows)".dependencies.winapi]
+-version = "0.3"
+-features = ["winnls"]
+-optional = true
+ [badges.maintenance]
+ status = "actively-developed"
+ 
diff --git a/rust-num-format.spec b/rust-num-format.spec
new file mode 100644
index 0000000..cebf691
--- /dev/null
+++ b/rust-num-format.spec
@@ -0,0 +1,203 @@
+# Generated by rust2rpm 18
+%bcond_without check
+%global debug_package %{nil}
+
+%global crate num-format
+
+Name:           rust-%{crate}
+Version:        0.4.0
+Release:        %autorelease
+Summary:        Rust crate for producing string-representations of numbers, formatted according to international standards
+
+# Upstream license specification: MIT/Apache-2.0
+License:        MIT or ASL 2.0
+URL:            https://crates.io/crates/num-format
+Source:         %{crates_source}
+# Initial patched metadata
+# Bump arrayvec to 0.5, num-bigint to 0.4 and drop Windows dependencies
+Patch0:         num-format-fix-metadata.diff
+
+ExclusiveArch:  %{rust_arches}
+%if %{__cargo_skip_build}
+BuildArch:      noarch
+%endif
+
+BuildRequires:  rust-packaging
+
+%global _description %{expand:
+Rust crate for producing string-representations of numbers, formatted according
+to international standards.}
+
+%description %{_description}
+
+%package        devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description    devel %{_description}
+
+This package contains library source intended for building other packages
+which use "%{crate}" crate.
+
+%files          devel
+%license LICENSE-MIT LICENSE-APACHE
+%doc README.tpl README.md
+%{cargo_registry}/%{crate}-%{version_no_tilde}/
+
+%package     -n %{name}+default-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+default-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "default" feature of "%{crate}" crate.
+
+%files       -n %{name}+default-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+cfg-if-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+cfg-if-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "cfg-if" feature of "%{crate}" crate.
+
+%files       -n %{name}+cfg-if-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+encoding_rs-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+encoding_rs-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "encoding_rs" feature of "%{crate}" crate.
+
+%files       -n %{name}+encoding_rs-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+lazy_static-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+lazy_static-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "lazy_static" feature of "%{crate}" crate.
+
+%files       -n %{name}+lazy_static-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+libc-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+libc-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "libc" feature of "%{crate}" crate.
+
+%files       -n %{name}+libc-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+num-bigint-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+num-bigint-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "num-bigint" feature of "%{crate}" crate.
+
+%files       -n %{name}+num-bigint-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+serde-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+serde-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "serde" feature of "%{crate}" crate.
+
+%files       -n %{name}+serde-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+std-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+std-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "std" feature of "%{crate}" crate.
+
+%files       -n %{name}+std-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+with-num-bigint-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+with-num-bigint-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "with-num-bigint" feature of "%{crate}" crate.
+
+%files       -n %{name}+with-num-bigint-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+with-serde-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+with-serde-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "with-serde" feature of "%{crate}" crate.
+
+%files       -n %{name}+with-serde-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%package     -n %{name}+with-system-locale-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+with-system-locale-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "with-system-locale" feature of "%{crate}" crate.
+
+%files       -n %{name}+with-system-locale-devel
+%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+
+%prep
+%autosetup -n %{crate}-%{version_no_tilde} -p1
+%cargo_prep
+
+%generate_buildrequires
+%cargo_generate_buildrequires
+
+%build
+%cargo_build
+
+%install
+%cargo_install
+
+%if %{with check}
+%check
+%ifarch armv7hl i686
+# https://github.com/bcmyers/num-format/issues/26
+%cargo_test -- -- --skip test_usize --skip test_non_zero_usize --skip test_isize
+%else
+%cargo_test
+%endif
+%endif
+
+%changelog
+%autochangelog
diff --git a/sources b/sources
new file mode 100644
index 0000000..4f7b9d3
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (num-format-0.4.0.crate) = 20f6a02dff0759f5e4cf7aea7e877a6ccb088b81f4c30dcee2b565ee91f8f2d25d9c1c65f5e823f5c7f2d9a36851396865ee1a6ec9264352b8ab3481783dbd4c