docs: remove obsolete cmd bootstrap and delete dcrup.cmd

dcrup.cmd

@@ -1,13 +0,0 @@
-@echo off
-setlocal
-set "SCRIPT_DIR=%~dp0"
-if exist "%SCRIPT_DIR%dcrup.ps1" (
-  powershell -NoProfile -ExecutionPolicy Bypass -File "%SCRIPT_DIR%dcrup.ps1" %*
-  exit /b %ERRORLEVEL%
-)
-if exist "%USERPROFILE%\.dcr\bin\dcrup.ps1" (
-  powershell -NoProfile -ExecutionPolicy Bypass -File "%USERPROFILE%\.dcr\bin\dcrup.ps1" %*
-  exit /b %ERRORLEVEL%
-)
-echo [error] dcrup.ps1 not found near dcrup.cmd >&2
-exit /b 1

dcrup.ps1

@@ -1,4 +1,4 @@
-#Requires -Version 5.1
+#Requires -Version 5.1
 $ErrorActionPreference = 'Stop'
 
 $DcrupHome = if ($env:DCRUP_HOME) { $env:DCRUP_HOME } else { Join-Path $env:USERPROFILE '.dcr' }
@@ -6,6 +6,7 @@ $DcrupBin  = if ($env:DCRUP_BIN)  { $env:DCRUP_BIN  } else { Join-Path $DcrupHom
 $DcrupTc   = Join-Path $DcrupHome 'toolchains'
 $DcrupMeta = Join-Path $DcrupHome 'meta'
 $RepoUrl   = if ($env:DCRUP_REPO) { $env:DCRUP_REPO } else { 'https://github.com/dexoron/dcr' }
+$InstallUrl = if ($env:DCRUP_INSTALL_URL) { $env:DCRUP_INSTALL_URL } else { 'https://ps1.dcr-tool.ru' }
 $DcrupMirror = if ($env:DCRUP_MIRROR) { $env:DCRUP_MIRROR } else { 'auto' }
 $ApiLatest = 'https://api.github.com/repos/dexoron/dcr/releases/latest'
 $ApiAll    = 'https://api.github.com/repos/dexoron/dcr/releases'
@@ -133,6 +134,18 @@ function Link-Default([string]$id) {
     Ok "default → $id ($dst)"
 }
 
+function Resolve-InstalledId([string]$spec) {
+    Parse-Spec $spec
+    if ($script:SpecChannel -eq 'night' -or $script:SpecFloating) {
+        $item = Get-ChildItem $DcrupTc -Directory -ErrorAction SilentlyContinue |
+            Where-Object { $_.Name -like "$($script:SpecChannel)-*" } |
+            Sort-Object Name | Select-Object -Last 1
+        if ($item) { return $item.Name }
+        return $null
+    }
+    return (Toolchain-Id)
+}
+
 function Set-Mirror([string]$value) {
     if ($value -notin @('auto', 'cf', 'gh', 'sf', 'ya')) {
         Die "invalid --mirror: $value (use auto|cf|gh|sf|ya)"
@@ -379,7 +392,19 @@ function Cmd-Show {
 
 function Cmd-SelfInstall {
     Ensure-Dirs
+    if ([string]::IsNullOrWhiteSpace($PSCommandPath) -or -not (Test-Path $PSCommandPath)) {
+        # With `irm URL | iex`, PowerShell evaluates text and there is no
+        # source path. Download the canonical installer for self-install.
+        $tmp = Join-Path $env:TEMP ("dcrup-" + [guid]::NewGuid().ToString('N') + '.ps1')
+        try {
+            Invoke-WebRequest -Uri $InstallUrl -OutFile $tmp -UseBasicParsing -UserAgent 'dcrup'
+            Copy-Item $tmp (Join-Path $DcrupBin 'dcrup.ps1') -Force
+        } finally {
+            Remove-Item $tmp -Force -ErrorAction SilentlyContinue
+        }
+    } else {
         Copy-Item $PSCommandPath (Join-Path $DcrupBin 'dcrup.ps1') -Force
+    }
     Install-CmdShim
     Ensure-UserPath
     Ok "dcrup installed to $DcrupBin (use: dcrup …)"
@@ -417,7 +442,7 @@ switch ($cmd) {
         if ($a -like 'night-*') { Cmd-Install @('night', '--build', '--force') }
         elseif ($a -like 'stable-*') { Cmd-Install @('stable', '--force') }
         elseif ($a -like 'dev-*') { Cmd-Install @('dev', '--force') }
-        else { Ok "pinned $a — install a newer version explicitly" }
+        else { Ok "pinned $a - install a newer version explicitly" }
     }
     'uninstall' {
         if ($rest -contains '--all') {
@@ -426,9 +451,21 @@ switch ($cmd) {
             Remove-Item (Active-Path) -ErrorAction SilentlyContinue
             Ok 'removed all'
         } else {
-            Die 'use: dcrup uninstall --all  (or install a replacement first)'
+            if ($rest.Count -ne 1) { Die 'usage: dcrup uninstall <spec>|--all' }
+            $id = Resolve-InstalledId $rest[0]
+            if (-not $id) { Die "not installed: $($rest[0])" }
+            $dir = Join-Path $DcrupTc $id
+            if (-not (Test-Path $dir)) { Die "not installed: $($rest[0])" }
+            Remove-Item -Recurse -Force $dir
+            if ((Read-Active) -eq $id) {
+                Remove-Item (Join-Path $DcrupBin 'dcr.exe') -ErrorAction SilentlyContinue
+                Remove-Item (Active-Path) -ErrorAction SilentlyContinue
+                Warn 'removed active toolchain; install or select another default'
+            }
+            Ok "removed $id"
         }
     }
     'self-install' { Cmd-SelfInstall }
     default { Die "unknown command: $cmd" }
 }
+

dcrup.sh

@@ -6,6 +6,7 @@ DCRUP_BIN="${DCRUP_BIN:-$DCRUP_HOME/bin}"
 DCRUP_TC="${DCRUP_HOME}/toolchains"
 DCRUP_META="${DCRUP_HOME}/meta"
 REPO_URL="${DCRUP_REPO:-https://github.com/dexoron/dcr}"
+DCRUP_INSTALL_URL="${DCRUP_INSTALL_URL:-https://sh.dcr-tool.ru}"
 DCRUP_MIRROR="${DCRUP_MIRROR:-auto}"
 API_LATEST="https://api.github.com/repos/dexoron/dcr/releases/latest"
 API_ALL="https://api.github.com/repos/dexoron/dcr/releases"
@@ -20,7 +21,10 @@ NC='\033[0m'
 log() { printf "${CYAN}[dcrup]${NC} %s\n" "$*"; }
 ok() { printf "${GREEN}[ok]${NC} %s\n" "$*"; }
 warn() { printf "${YELLOW}[warn]${NC} %s\n" "$*"; }
-die()  { printf "${RED}[error]${NC} %s\n" "$*" >&2; exit 1; }
+die() {
+  printf "${RED}[error]${NC} %s\n" "$*" >&2
+  exit 1
+}
 
 usage() {
   cat <<'EOF'
@@ -235,6 +239,8 @@ link_default() {
   local id="$1"
   local src="$DCRUP_TC/$id/dcr"
   [[ -x "$src" ]] || die "toolchain not installed: $id"
+  # Resolve the source so a relative DCRUP_HOME cannot create a broken link.
+  src="$(cd "$(dirname "$src")" && pwd)/$(basename "$src")"
   ln -sfn "$src" "$DCRUP_BIN/dcr"
   write_active "$id"
   ok "default → $id ($DCRUP_BIN/dcr)"
@@ -361,8 +367,8 @@ install_prebuilt() {
 
   mkdir -p "$dest"
   log "downloading $asset (mirror=$DCRUP_MIRROR) …"
-    download_from_mirrors "$tag" "$asset" "$dest" \
-        || die "no mirror reachable for $asset (try: --mirror cf|gh|sf|ya)"
+  download_from_mirrors "$tag" "$asset" "$dest" ||
+    die "no mirror reachable for $asset (try: --mirror cf|gh|sf|ya)"
   mirror="$USED_MIRROR"
   log "mirror → $mirror"
   chmod +x "$dest/dcr"
@@ -390,8 +396,8 @@ install_build() {
 
   if [[ "$SPEC_CHANNEL" == "night" ]]; then
     log "cloning $REPO_URL (branch dev) for night …"
-        git clone --depth 1 --branch dev "$REPO_URL" "$tmp/src" 2>/dev/null \
-            || git clone --depth 1 "$REPO_URL" "$tmp/src"
+    git clone --depth 1 --branch dev "$REPO_URL" "$tmp/src" 2>/dev/null ||
+      git clone --depth 1 "$REPO_URL" "$tmp/src"
     sha="$(git -C "$tmp/src" rev-parse --short HEAD)"
     version="night"
     id="$(toolchain_id "$sha")"
@@ -403,8 +409,8 @@ install_build() {
     version="$(normalize_version "$tag")"
     id="$(toolchain_id "$version")"
     log "cloning $REPO_URL @ $tag …"
-        git clone --depth 1 --branch "$tag" "$REPO_URL" "$tmp/src" 2>/dev/null \
-            || {
+    git clone --depth 1 --branch "$tag" "$REPO_URL" "$tmp/src" 2>/dev/null ||
+      {
         git clone --depth 1 "$REPO_URL" "$tmp/src"
         git -C "$tmp/src" fetch --depth 1 origin "refs/tags/${tag}:refs/tags/${tag}"
         git -C "$tmp/src" checkout "$tag"
@@ -415,8 +421,8 @@ install_build() {
     id="$(toolchain_id)"
     local tag="v${SPEC_VERSION}"
     log "cloning $REPO_URL @ $tag …"
-        git clone --depth 1 --branch "$tag" "$REPO_URL" "$tmp/src" 2>/dev/null \
-            || {
+    git clone --depth 1 --branch "$tag" "$REPO_URL" "$tmp/src" 2>/dev/null ||
+      {
         git clone --depth 1 "$REPO_URL" "$tmp/src"
         git -C "$tmp/src" fetch --depth 1 origin "refs/tags/${tag}:refs/tags/${tag}"
         git -C "$tmp/src" checkout "$tag"
@@ -453,9 +459,18 @@ cmd_install() {
   local libc_cli=""
   while [[ $# -gt 0 ]]; do
     case "$1" in
-            --build) mode="build"; shift ;;
-            --release) mode="release"; shift ;;
-            --force) FORCE=1; shift ;;
+    --build)
+      mode="build"
+      shift
+      ;;
+    --release)
+      mode="release"
+      shift
+      ;;
+    --force)
+      FORCE=1
+      shift
+      ;;
     --libc)
       [[ $# -ge 2 ]] || die "--libc needs gnu|musl|auto"
       libc_cli="$2"
@@ -474,7 +489,10 @@ cmd_install() {
       set_mirror "${1#--mirror=}"
       shift
       ;;
-            -h|--help) usage; exit 0 ;;
+    -h | --help)
+      usage
+      exit 0
+      ;;
     -*) die "unknown flag: $1" ;;
     *)
       [[ -z "$spec" ]] || die "unexpected argument: $1"
@@ -633,14 +651,28 @@ cmd_self_install() {
   local dest="$DCRUP_BIN"
   while [[ $# -gt 0 ]]; do
     case "$1" in
-            --to) dest="$2"; shift 2 ;;
+    --to)
+      dest="$2"
+      shift 2
+      ;;
     *) die "usage: dcrup self-install [--to DIR]" ;;
     esac
   done
   ensure_dirs
   mkdir -p "$dest"
   local self
-    self="$(readlink -f "$0" 2>/dev/null || realpath "$0" 2>/dev/null || echo "$0")"
+  self="$(readlink -f "$0" 2>/dev/null || realpath "$0" 2>/dev/null || true)"
+  if [[ -z "$self" || ! -f "$self" ]]; then
+    # When invoked as `curl ... | sh`, the shell has no script file to copy.
+    # Fetch the same trusted installer URL and install that exact script.
+    need_cmd curl
+    self="$(mktemp "${TMPDIR:-/tmp}/dcrup.XXXXXX")"
+    curl -fsSL --proto '=https' --tlsv1.2 "$DCRUP_INSTALL_URL" -o "$self" || {
+      rm -f "$self"
+      die "unable to download installer for self-install"
+    }
+    trap 'rm -f "$self"' EXIT
+  fi
   cp "$self" "$dest/dcrup"
   chmod +x "$dest/dcrup"
   ok "dcrup installed to $dest/dcrup"

docs/getting-started/installation.mdx

@@ -11,7 +11,7 @@ Install and switch DCR versions (stable / dev / night, pin `0.8.2`, optional bui
 ### Linux / macOS / BSD / Windows (bash)
 
 ```sh
-curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
+curl --proto '=https' --tlsv1.2 -sSf https://sh.dcr-tool.ru | sh -s -- self-install
 export PATH="$HOME/.dcr/bin:$PATH"
 dcrup install stable
 ```
@@ -19,28 +19,19 @@ dcrup install stable
 Non-interactive install of DCR in one shot:
 
 ```sh
-curl -fsSL https://sh.dcr-tool.ru | sh -s -- install stable
+curl --proto '=https' --tlsv1.2 -sSf https://sh.dcr-tool.ru | sh -s -- install stable
 export PATH="$HOME/.dcr/bin:$PATH"
 ```
 
 ### Windows (PowerShell)
 
 ```powershell
-irm https://ps1.dcr-tool.ru | iex
-# or download then run:
-# irm https://ps1.dcr-tool.ru -OutFile dcrup.ps1
-# powershell -File .\dcrup.ps1 self-install
+& ([scriptblock]::Create((irm https://ps1.dcr-tool.ru))) self-install
 # $env:Path += ";$env:USERPROFILE\.dcr\bin"
 dcrup install stable
 ```
 
-Optional cmd bootstrap (if you prefer `curl` of the cmd shim):
-
-```bat
-curl -fsSL -o dcrup.cmd https://cmd.dcr-tool.ru
-```
-
-After `self-install`, the command is **`dcrup`** (no `.sh` / `.ps1`): shims live in `~/.dcr/bin` (Unix) or `%USERPROFILE%\.dcr\bin` (Windows `dcrup.cmd`).
+After `self-install`, the command is **`dcrup`** (no `.sh` / `.ps1`) and is installed in `~/.dcr/bin` (Unix) or `%USERPROFILE%\.dcr\bin` (Windows).
 
 ### Common dcrup commands
 
@@ -58,6 +49,8 @@ dcrup update
 dcrup list
 dcrup show
 dcrup which
+dcrup uninstall 0.8.2    # remove one installed version
+dcrup uninstall --all    # remove all installed versions
 ```
 
 Layout: `~/.dcr/toolchains/<id>/dcr` and `~/.dcr/bin/dcr` → active version.