diff --git a/Cargo.lock b/Cargo.lock
index c05e935..22a7155 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2025,7 +2025,7 @@ checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
 [[package]]
 name = "typify"
 version = "0.0.11-dev"
-source = "git+https://github.com/oxidecomputer/typify#c18d0452db86d57318eec40a14c5aca5a079e6f8"
+source = "git+https://github.com/oxidecomputer/typify#cd1f95b66b0d0fbb33537d66043f26512ee3268b"
 dependencies = [
  "typify-impl",
  "typify-macro",
@@ -2034,7 +2034,7 @@ dependencies = [
 [[package]]
 name = "typify-impl"
 version = "0.0.11-dev"
-source = "git+https://github.com/oxidecomputer/typify#c18d0452db86d57318eec40a14c5aca5a079e6f8"
+source = "git+https://github.com/oxidecomputer/typify#cd1f95b66b0d0fbb33537d66043f26512ee3268b"
 dependencies = [
  "heck",
  "log",
@@ -2052,7 +2052,7 @@ dependencies = [
 [[package]]
 name = "typify-macro"
 version = "0.0.11-dev"
-source = "git+https://github.com/oxidecomputer/typify#c18d0452db86d57318eec40a14c5aca5a079e6f8"
+source = "git+https://github.com/oxidecomputer/typify#cd1f95b66b0d0fbb33537d66043f26512ee3268b"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/progenitor-impl/tests/output/nexus-builder-tagged.out b/progenitor-impl/tests/output/nexus-builder-tagged.out
index e40f252..0324676 100644
--- a/progenitor-impl/tests/output/nexus-builder-tagged.out
+++ b/progenitor-impl/tests/output/nexus-builder-tagged.out
@@ -234,6 +234,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct DerEncodedKeyPair {
         ///request signing private key (base64 encoded der file)
@@ -409,6 +416,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct DiskResultsPage {
@@ -599,6 +613,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The `FieldType` identifies the data type of a target or metric field.
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum FieldType {
@@ -654,6 +675,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum FleetRole {
         #[serde(rename = "admin")]
@@ -700,6 +728,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -959,6 +994,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of an [`IdentityProvider`]
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct IdentityProvider {
@@ -1036,6 +1078,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Describes what kind of identity is described by an id
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum IdentityType {
@@ -1075,6 +1124,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     #[serde(tag = "type")]
     pub enum IdpMetadataSource {
@@ -1407,6 +1463,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The kind of an external IP address for an instance
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum IpKind {
@@ -1450,6 +1513,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     #[serde(untagged)]
     pub enum IpNet {
@@ -1484,6 +1554,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IpNet {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl ToString for IpNet {
         fn to_string(&self) -> String {
             match self {
@@ -1635,6 +1712,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Ipv4Net {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Ipv4Net {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1693,6 +1777,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Ipv6Net {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Ipv6Net {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1764,6 +1855,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for L4PortRange {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for L4PortRange {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1819,6 +1917,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for MacAddr {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for MacAddr {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1896,6 +2001,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Name {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Name {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1954,6 +2066,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Supported set of sort modes for scanning by name only
     ///
     ///Currently, we only support scanning in ascending order.
@@ -1995,6 +2114,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `NetworkInterface` represents a virtual network interface device.
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct NetworkInterface {
@@ -2196,6 +2322,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2347,6 +2480,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2487,6 +2627,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for RoleName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for RoleName {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -2657,6 +2804,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct RouterRouteResultsPage {
@@ -2914,6 +3068,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -3151,6 +3312,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for TimeseriesName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for TimeseriesName {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -3290,6 +3458,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct UserResultsPage {
@@ -3434,6 +3609,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum VpcFirewallRuleDirection {
         #[serde(rename = "inbound")]
@@ -3476,6 +3658,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Filter for a firewall rule. A given packet must match every field that
     /// is present for the rule to apply to it. A packet matches a field if any
     /// entry in that field matches the packet.
@@ -3568,6 +3757,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum VpcFirewallRuleStatus {
         #[serde(rename = "disabled")]
@@ -3610,6 +3806,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `VpcFirewallRuleTarget` is used to specify the set of [`Instance`]s to
     /// which a firewall rule applies.
     #[derive(Clone, Debug, Deserialize, Serialize)]
@@ -3782,6 +3985,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct VpcRouterResultsPage {
diff --git a/progenitor-impl/tests/output/nexus-builder.out b/progenitor-impl/tests/output/nexus-builder.out
index 7a16d8e..ee5db28 100644
--- a/progenitor-impl/tests/output/nexus-builder.out
+++ b/progenitor-impl/tests/output/nexus-builder.out
@@ -236,6 +236,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct DerEncodedKeyPair {
         ///request signing private key (base64 encoded der file)
@@ -413,6 +420,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct DiskResultsPage {
@@ -605,6 +619,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The `FieldType` identifies the data type of a target or metric field.
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
@@ -662,6 +683,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
     )]
@@ -710,6 +738,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -971,6 +1006,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of an [`IdentityProvider`]
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct IdentityProvider {
@@ -1050,6 +1092,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Describes what kind of identity is described by an id
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
@@ -1091,6 +1140,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     #[serde(tag = "type")]
     pub enum IdpMetadataSource {
@@ -1425,6 +1481,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The kind of an external IP address for an instance
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
@@ -1470,6 +1533,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     #[serde(untagged)]
     pub enum IpNet {
@@ -1504,6 +1574,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IpNet {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl ToString for IpNet {
         fn to_string(&self) -> String {
             match self {
@@ -1655,6 +1732,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Ipv4Net {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Ipv4Net {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1713,6 +1797,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Ipv6Net {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Ipv6Net {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1784,6 +1875,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for L4PortRange {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for L4PortRange {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1839,6 +1937,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for MacAddr {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for MacAddr {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1916,6 +2021,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Name {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Name {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1976,6 +2088,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Supported set of sort modes for scanning by name only
     ///
     ///Currently, we only support scanning in ascending order.
@@ -2019,6 +2138,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `NetworkInterface` represents a virtual network interface device.
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct NetworkInterface {
@@ -2222,6 +2348,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2375,6 +2508,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2515,6 +2655,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for RoleName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for RoleName {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -2687,6 +2834,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct RouterRouteResultsPage {
@@ -2946,6 +3100,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -3183,6 +3344,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for TimeseriesName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for TimeseriesName {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -3324,6 +3492,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct UserResultsPage {
@@ -3470,6 +3645,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
     )]
@@ -3514,6 +3696,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Filter for a firewall rule. A given packet must match every field that
     /// is present for the rule to apply to it. A packet matches a field if any
     /// entry in that field matches the packet.
@@ -3608,6 +3797,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
     )]
@@ -3652,6 +3848,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `VpcFirewallRuleTarget` is used to specify the set of [`Instance`]s to
     /// which a firewall rule applies.
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
@@ -3826,6 +4029,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct VpcRouterResultsPage {
diff --git a/progenitor-impl/tests/output/nexus-positional.out b/progenitor-impl/tests/output/nexus-positional.out
index c8b9312..a424c95 100644
--- a/progenitor-impl/tests/output/nexus-positional.out
+++ b/progenitor-impl/tests/output/nexus-positional.out
@@ -210,6 +210,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for DatumType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct DerEncodedKeyPair {
         ///request signing private key (base64 encoded der file)
@@ -343,6 +350,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for DiskMetricName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct DiskResultsPage {
@@ -497,6 +511,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FieldSource {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The `FieldType` identifies the data type of a target or metric field.
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum FieldType {
@@ -552,6 +573,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FieldType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum FleetRole {
         #[serde(rename = "admin")]
@@ -598,6 +626,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for FleetRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -815,6 +850,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of an [`IdentityProvider`]
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct IdentityProvider {
@@ -880,6 +922,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdentityProviderType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Describes what kind of identity is described by an id
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum IdentityType {
@@ -919,6 +968,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IdentityType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     #[serde(tag = "type")]
     pub enum IdpMetadataSource {
@@ -1203,6 +1259,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///The kind of an external IP address for an instance
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum IpKind {
@@ -1246,6 +1309,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IpKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     #[serde(untagged)]
     pub enum IpNet {
@@ -1280,6 +1350,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for IpNet {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl ToString for IpNet {
         fn to_string(&self) -> String {
             match self {
@@ -1395,6 +1472,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Ipv4Net {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Ipv4Net {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1447,6 +1531,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Ipv6Net {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Ipv6Net {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1512,6 +1603,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for L4PortRange {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for L4PortRange {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1567,6 +1665,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for MacAddr {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for MacAddr {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1632,6 +1737,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for Name {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for Name {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -1690,6 +1802,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for NameOrIdSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Supported set of sort modes for scanning by name only
     ///
     ///Currently, we only support scanning in ascending order.
@@ -1731,6 +1850,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for NameSortMode {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `NetworkInterface` represents a virtual network interface device.
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct NetworkInterface {
@@ -1890,6 +2016,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for OrganizationRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2005,6 +2138,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for ProjectRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2109,6 +2249,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for RoleName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for RoleName {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -2261,6 +2408,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for RouterRouteKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct RouterRouteResultsPage {
@@ -2464,6 +2618,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for SiloRole {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Client view of a [`Policy`], which describes how this resource may be
     /// accessed
     ///
@@ -2635,6 +2796,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for TimeseriesName {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     impl<'de> serde::Deserialize<'de> for TimeseriesName {
         fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
         where
@@ -2744,6 +2912,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for UserProvisionType {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct UserResultsPage {
@@ -2864,6 +3039,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleAction {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum VpcFirewallRuleDirection {
         #[serde(rename = "inbound")]
@@ -2906,6 +3088,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleDirection {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///Filter for a firewall rule. A given packet must match every field that
     /// is present for the rule to apply to it. A packet matches a field if any
     /// entry in that field matches the packet.
@@ -2992,6 +3181,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleProtocol {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum VpcFirewallRuleStatus {
         #[serde(rename = "disabled")]
@@ -3034,6 +3230,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcFirewallRuleStatus {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A `VpcFirewallRuleTarget` is used to specify the set of [`Instance`]s to
     /// which a firewall rule applies.
     #[derive(Clone, Debug, Deserialize, Serialize)]
@@ -3170,6 +3373,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for VpcRouterKind {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     ///A single page of results
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct VpcRouterResultsPage {
diff --git a/progenitor-impl/tests/output/propolis-server-builder-tagged.out b/progenitor-impl/tests/output/propolis-server-builder-tagged.out
index 28a7c37..92ab28b 100644
--- a/progenitor-impl/tests/output/propolis-server-builder-tagged.out
+++ b/progenitor-impl/tests/output/propolis-server-builder-tagged.out
@@ -276,6 +276,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct InstanceStateMonitorRequest {
         pub gen: u64,
@@ -345,6 +352,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum MigrationState {
         Sync,
@@ -409,6 +423,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct NetworkInterface {
         pub attachment: NetworkInterfaceAttachmentState,
diff --git a/progenitor-impl/tests/output/propolis-server-builder.out b/progenitor-impl/tests/output/propolis-server-builder.out
index 63937ae..61a456c 100644
--- a/progenitor-impl/tests/output/propolis-server-builder.out
+++ b/progenitor-impl/tests/output/propolis-server-builder.out
@@ -278,6 +278,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct InstanceStateMonitorRequest {
         pub gen: u64,
@@ -349,6 +356,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(
         Clone, Copy, Debug, Deserialize, Eq, Hash, JsonSchema, Ord, PartialEq, PartialOrd, Serialize,
     )]
@@ -415,6 +429,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, JsonSchema, Serialize)]
     pub struct NetworkInterface {
         pub attachment: NetworkInterfaceAttachmentState,
diff --git a/progenitor-impl/tests/output/propolis-server-positional.out b/progenitor-impl/tests/output/propolis-server-positional.out
index d8b2b0e..6a649e3 100644
--- a/progenitor-impl/tests/output/propolis-server-positional.out
+++ b/progenitor-impl/tests/output/propolis-server-positional.out
@@ -198,6 +198,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct InstanceStateMonitorRequest {
         pub gen: u64,
@@ -255,6 +262,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for InstanceStateRequested {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
     pub enum MigrationState {
         Sync,
@@ -319,6 +333,13 @@ pub mod types {
         }
     }
 
+    impl std::convert::TryFrom<String> for MigrationState {
+        type Error = &'static str;
+        fn try_from(value: String) -> Result<Self, &'static str> {
+            value.parse()
+        }
+    }
+
     #[derive(Clone, Debug, Deserialize, Serialize)]
     pub struct NetworkInterface {
         pub attachment: NetworkInterfaceAttachmentState,