feat: add psql as its own installer

psql/README.md

@@ -0,0 +1,22 @@
+---
+title: PSQL (PostgreSQL Client)
+homepage: https://www.postgresql.org/
+tagline: |
+  psql: REPL for Postgres that supports standard TLS (+SNI,ALPN), .pgpass, and .psqlrc
+---
+
+To update or switch versions, run `webi psql@stable` (or `@v17.0`, `@beta`,
+etc).
+
+### Files
+
+These are the files / directories that are created and/or modified with this
+install:
+
+```text
+~/.config/envman/PATH.env
+~/.local/opt/psql/
+~/.pgpass
+~/.psqlrc
+~/.config/psql/
+```

psql/install.sh

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+#!/bin/sh
+# shellcheck disable=SC2034
+
+__init_psql() {
+    set -e
+    set -u
+
+    ##################################
+    # Install psql (postgres client) #
+    ##################################
+
+    # Every package should define these 6 variables
+    pkg_cmd_name="psql"
+
+    pkg_dst_cmd="${HOME}/.local/opt/psql/bin/psql"
+    pkg_dst_dir="${HOME}/.local/opt/psql"
+    pkg_dst="${pkg_dst_dir}"
+
+    pkg_src_cmd="${HOME}/.local/opt/psql-v${WEBI_VERSION}/bin/psql"
+    pkg_src_dir="${HOME}/.local/opt/psql-v${WEBI_VERSION}"
+    pkg_src="${pkg_src_dir}"
+
+    pkg_get_current_version() {
+        # 'psql --version' has output in this format:
+        #       psql (PostgreSQL) 17.0
+        # This trims it down to just the version number:
+        #       17.0
+        psql --version 2> /dev/null | head -n 1 | cut -d' ' -f3
+    }
+
+    pkg_install() {
+        # mkdir -p $HOME/.local/opt
+        mkdir -p "$(dirname "$pkg_src")"
+
+        # mv ./psql-17 "$HOME/.local/opt/psql-v17.0"
+        mv ./"psql-"* "$pkg_src"
+
+        # initdb is mistakenly included with the client libs
+        rm -f "$pkg_src_dir"/bin/initdb
+        rm -f "$pkg_dst_dir"/bin/initdb
+    }
+
+    pkg_done_message() {
+        echo "    Installed $(t_pkg "$pkg_cmd_name v$WEBI_VERSION") as $(t_link "$(fn_sub_home "${pkg_dst_cmd}")")"
+        echo ""
+        echo "Connect to PostgreSQL database with the default username and password:"
+        echo "    psql 'postgres://postgres:postgres@localhost:5432/postgres'"
+        echo ""
+    }
+}
+
+__init_psql

psql/releases.js

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+'use strict';
+
+let Releases = module.exports;
+
+var Github = require('../_common/github.js');
+var owner = 'bnnanet';
+var repo = 'postgresql-releases';
+
+Releases.latest = async function () {
+  let all = await Github.getDistributables(null, owner, repo);
+
+  /** @type {Array<Awaited<ReturnType<typeof Github.getDistributables>>>[Number]["releases"]} */
+  let distributables = [];
+  for (let dist of all.releases) {
+    let isBaseline = dist.name.includes('baseline');
+    if (isBaseline) {
+      continue;
+    }
+
+    let isClient = dist.name.includes('psql');
+    if (!isClient) {
+      continue;
+    }
+
+    // REL_17_0 => 17.0
+    dist.version = dist.version.replace(/REL_/g, '');
+    dist.version = dist.version.replace(/_/g, '.');
+
+    let isHardMusl = dist.name.includes('musl');
+    if (isHardMusl) {
+      Object.assign(dist, { libc: 'musl', _musl: true });
+    }
+    distributables.push(dist);
+  }
+
+  all.releases = distributables;
+
+  Object.assign(all, { _names: ['postgres', 'postgresql', 'pgsql', 'psql'] });
+
+  return all;
+};
+
+if (module === require.main) {
+  Releases.latest().then(function (all) {
+    let normalize = require('../_webi/normalize.js');
+    all = normalize(all);
+    let json = JSON.stringify(all, null, 2);
+    console.info(json);
+  });
+}